Acids and Bases

A base is a compound that can donate an electron pair, while an acid is a compound that can accept an electron pair. Thus, an acid-base reaction would be a reaction where a base donates an electron pair to an acid. Although this is the modern definition, the classical definition is still more useful conceptually: an acid is a proton (H+) donor, while a base is a hydroxide (OH-) donor. By viewing it in this light, direct calculations of acidity can be done by measuring the concentration of protons within a solution. This measurement is known as the power of hydrogen, or pH: pH = -log([H+]) Example 1: So, if [H+] = 10^-2, then the pH = -log(10^-2) = 2 Basicity on the other hand can be calculated by measuring the concentration of the hydroxide ion: pOH = -log([OH-]) Example 2: So, if [OH-] = 10^-12, then the pOH = -log(10^-12) = 12 By looking at the dissociation constant of water, pH and pOH are intricately linked by the following relationship: Kw = 10^-14 = [H+]*[OH-] Taking the –log of both sides: 14 = -log([H+]) + – log([OH-]) 14 = pH + pOH Using this relationship, we can see that the pHs of both of the above examples are exactly the same: Example 1: pH = 2 Example 2: pH = 14 – pOH = 14-12 =2 Thus, understanding the definition of an acid and a base as well as the intricate relationship between these two entities is crucial to understanding how to interpret acid-base reactions no matter how complex they may seem. © BrainMass Inc. October 6, 2021, 1:07 pm ad1c9bdddf
BrainMass Categories within Acids and Bases
Acid Base Neutralization

Solutions: 6
An Acid-Base Neutralization is a reaction where an acid and base react to form a salt.

Don't use plagiarized sources. Get Your Custom Essay on
Acids and Bases
From $10/Page
Order Essay

Ions and Salts

Solutions: 12
A salt forms when an acid reacts with a base.

BrainMass Solutions Available for Instant Download
Cleaning Pennies with Vinegar and Salt
In this task you will use the experimental scientific method to investigate a relevant, testable problem and communicate your findings in an organized written report. Design and carry out a scientific experiment that investigates a topic from either the life, earth or physical sciences and uses appropriate methods, tools, tec

Ranking Acidity and Hydrogen Atoms
The attachment contains all of the questions regarding ranking acidity and different forms of hydrogen atoms.

Calculating the pH of a weak acid
Given the concentration of a weak acid, calculate the pH of the solution. The Ka for acetic acid, CH3COOH, is 1.8×10^-5. Calculate the [H+] of a 0.20 M solution of acetic acid in water.

Understanding and Calculating Dilution Factors (DF)
Understanding dilution factors Question: A courier has just delivered a 2.0 mL sample of serum to your laboratory for analysis. In your analysis, you will combine a 0.05 mL aliquot of the serum with 9.95 mL of phosphate buffered saline diluent. Calculate the dilution factor.

Final pH of Tris
Calculate the final pH of 25 mL of buffer 0.1M Tris.HCl/Tris buffer, pH=6.60 after the addition of 1.00mL of 0.1M NaOH. pKa is 8.08. use the 0.10M Tris.HCl and 0.10M Tris to prepare 100mL, pH=6.6 solution. it calculated by pre-lab, it need 96.8 mL 0.10M Tris.HCl and 3.2mL Tris. and take 25mL pH=6.6 solution, then add 1mL of 0

Acid Reactions: Ion Concentrations and Ionization Constants
Find the solutions without using the Henderson-Hasselbalch equation. Please show all calculations. Question #1 A student dissolves 0.25 moles of the acid HA in water and dilutes the solution to the final volume of 500 mL. The student then gives a small portion of the solution to her professor. The professor uses a pH meter

Concentration without Hasselbach
Please find the solutions without using the Hasselbach equation. Please show all calculations. Question 1 Find [H^+] in a 25 degrees Celsius solution prepared by dissolving 0.20 moles of NH4Cl in water and diluting to a volume of 400 mL, given that Kb = 1.8 x 10^-5 for NH3 (aq) at 25 degrees Celsius. Question 2 Find

Air Bag Experiment
We did an experiment to determine how many grams of NaHCO3 and 0.8 M H2SO4 were required to inflate a quart-sized Ziploc bag. We determined the volume of the Ziploc bag to be 1.350 L. Using the ideal gas law, the molar calculation was 0.547 mols. We did 2 different scenarios. One was with the NaHCO3 as the limiting reagent, the

Reaction Mechanisms with resonance structures
1. Draw an arrow pushing mechanism for the reaction shown below. Be sure to show all lone pairs of electrons, all formal charges, all intermediates, and all important resonance structures 2. Provide reasonable synthetic sequences for the preparation of each of the following compounds from the indicated starting materials and

pH and pOH problems
a) If 0.1 g of Silver Nitrite (AgNO2; Ksp = 6.0 x 10 ^ -4) is added to 100 mL of water, what would the pH and pOH be? Note: The Ka for HNO2 is 7.2 x 10 ^ -4 b). If 0.1 g of Silver Nitrite is added to 0.1M solution of NaOH, what would the pH be? How much Silver Nitrite would dissolve?

Acid – Base Reactions Henderson-Hasselbalch Equation
Please show all work. Do NOT use the Henderson-Hasselbalch equation in solving any of these questions. 1. Ksp = 2 x 10^-19 for LaF3 in water at 25 degrees celcius. How many grams of LaF3 are present in 500 mL of saturated LaF3(aq) at 25 degrees celcius ? The atomic weight of La is 139. 2. Find [H+] in 0.25 M NaC2H3O2 (

General Properties of Aqueous Solutions
1- Do Strong electrolytes (in solution) conduct electricity well? 2- Determine if the following are soluble or insoluble in water PbCl2 PbNO3 PbS Na2S BaCO3 Ba(OH)2 LiOH AgCl AgC2H3O2 AgOH 3-Write the balanced net ionic equation for the following reaction: Na2SO4 + Pb(NO3)2–> 4-Write the balanced net io

Find pH and Mass Salt Mixture
1. Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO_2. Dissolved CO_2 satisfies the equilibrium equation The acid dissociation constants listed in most standard reference texts for carbonic acid actually apply to dissolved CO_2. For a CO_2 partial pressure of 7.7×10-4 atm in the a

Examples of Strong and Weak Acids and Bases and Buffers
This solution is an answer to finding the pH of a solution if it is either a strong acid/base or a weak acid/base or a buffer containing a weak acid and its conjugate or weak base and it’s conjugate. 1. a) Give examples of strong acids and bases. b) find the pH of 0.01 M and 0.001 M solution of each. 2. a) Give exa

Electrochemistry: Oxidation Reactions
Please explain how to do these E-chem reactions. Set 1: Find the standard reduction potential for the reaction (it’s a range based off results) VO3-(aq) + 4H+(aq) + e- → VO2+(aq) + 2H2O(l) Ecell=?? Results for my reactions any heat that is mentioned was for 12-15 minutes Vanadyl Sulfate (blue solution): 1.

Finding K
I have some problems on solving for K in equilbrium. I need a clear understanding for a test coming up early next week. I would appreciate a complete explanation with the work. Thank you for the help. 1. At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solut

General Chemistry: Various Elements and Metals
Hi, I need some assistance with the following chemistry questions. I am really struggling with these different concepts. 1. Bromine is a reddish-brown liquid with a relatively low boiling point. What is the density (g/mL) of bromine if 861 mL has a mass of 2686 g? 2. How many liters of bromine are present in 85 mL of bro

The Behavior of Substances in Water
4.19. The Behavior of Substances in Water Part 1 a. Ammonia, NH3, is a weak electrolyte. It forms ions in solution by reacting with water molecules to form the ammonium ion and hydroxide ion. Write the balanced chemical reaction for this process, including state symbols. b. From everyday experience you are probably aware th

How to Prepare an HCl Solution
Prepare a step by step process to prepare 500 grams of a 5% HCl aqueous solution. (Assume 37% by mass HCl stock solution is used)

pH Observations: Example Problem
You measure the pH (which is a measure of the [H+], the lower the pH the higher the [H+] is) of a pure water solution and find that it has a pH of 7.0; however, after sitting for a while on the desk, the pH is taken again and found to be 5.7. If this solution is then heated, cooled to room temperature again, the pH is again 7.0.

Chemistry Problems: Equilibrium Concentration of Gas
A 3.00 L flask initially contains 1.50 mol of gas A and 0.450 mol of gas B. Gas A decomposes according to: 3A <-> 2B + C DeltaH = +90kJ mol^-1 The equilibrium concentration of gas C is 0.100 mol/L. What is the equilibrium concentration of gas A? What is the equilibrium concentration of gas B? What is the equilibrium co

Herbicides and the Effects on Plants
Assignment CROP 440/540 Week 7 A field corn grower near Mythtown, Central State, has called, and asked you to visit a field that he is worried about. He says the entire field looks sick, and he wants you to give an expert opinion on what you think is wrong. During your conversation, you learn that about a week ago, the grower a

Products Produced by the Oxidation of C7H14O3
How many grams of the products are produced by the oxidation of C7H14O3 by potassium permanganate in acidic solution (HCl is the acid) when you start with 25.65494 g of C7H14O2 and stoichiometric amounts of potassium permanganate? The products are CO2, H2O, the manganese(II) ion, and of course the potassium and chloride ions, wh

Oxyacids: Oxygen and Strength of the Acid
Several elements form oxyacids with different numbers of oxygens attached to the central atom. However, the strongest of these oxyacids are the ones that have the most oxygens attached. For example, HNO2 is a weak acid; whereas, HNO3 is a very strong acid. Likewise, H2SO3 is a weak acid and H2SO4 is a very strong acid. Using

Resolution of Mixtures: Filtration and Distillation
The experiment performed is outlined in the attached pdf file. I did not do the melting point or silver nitrate parts, but I would still like to know what was going on if I did. Please help me with citations as needed, so I can look them up for more detail. Purpose: The separation of mixtures into their constituent components

Hydronium ion
The authors of your book use the hydronium ion to indicate what happens when an acid has been dissolved in water. Is this really a legitimate representation of what happens when an acid dissolves in water? Fully explain your answer.

Chemistry – Determining Error
Sodium bicarbonate was added to an unlimited amount of sulfuric acid undergoing a reaction to produce sodium sulfate plus carbonic acid (which turned in to water vapor and carbon dioxide upon heating). Na2CO3 +H2SO4——> H2CO3 +Na2SO4 I would like to know: a.) 2.095 grams of sodium bicarbonate was used in the reaction an

Empirical formula of a compound consisting of lead, carbon, hydrogen and oxygen
An organic compound containing lead was found to contain 21.70 C and 2.7% H. The lead content was found by dissolving 4.6201g of the compound in water and adding sodium sulfate. 3.100 g of lead precipitate was collected. What is the empirical formula of the compound? [assume the compound consists of lead, carbon, hydrogen and

Molar Masses
BACKGROUND Here is an example of how to make up a W/V solution, to give you an idea about the steps for the next exercise. Using the salt provided to you, you can make a 50 ml of 5% (W/V) NaCl solution. *Steps: 1. Get a clean 250ml-beaker ready; 2. Add about 35 ml dH2O to above beaker; 3. Weigh _______ grams of salt usin

Chemicals Left in Water after Firefighters Leave
Why do firefighters recommend the use of a deluging volume of water when extinguishing an oxidizer-supported fire? What may happen to a large (i.e., 30-50lb) container of trichloro-s-triazinetrione, or calcium hypochlorite, if it is left to sit in the water and muck remaining in a building after fire fighting efforts have ended,.To continue with the answer check on

Order NOW For A 35% Discount!
Pages (550 words)
Approximate price: -

Why Choose Us

Quality Homework Writing

Do you need to ace your test? We have qualified writers to assist you in writing 100% quality homework writing. Mycoursewriter offers students unique and personalized custom papers that help them in getting good grades. Our academic experts will assist you with your dissertation papers, thesis writing, research papers, term papers, and case study homework help. Our writers are experienced and have perfected the art of crafting the best essay writing papers regardless of your academic level. Order now and get our superb homework writing services.

Expert Academic Writers

A student needs professional assistance outside class time. Before hiring our writers, they undergo thorough tests and strict educational backgrounds. After passing a test, our writers undergo training to ensure they deliver expert professional papers to our customers. We ensure they meet the timely delivery of papers and follow our customers' provided instructions. Every writer is an ENL writer and is from the USA, Canada, UK, or Australia. Our experts approach papers effectively depending on their area of specialization.

Affordable Price Guarantees

Is the deal too good to be true? Mycoursewriter is the most affordable assignment help website on the market. We consider students' daily needs for academic help. Our paper costs are reasonably priced to approximately 90% of students around the globe. Our main aim is to ensure students achieve academic excellence, and we believe inconsiderable prices should not hinder students from getting quality homework writing help. In case of any dissatisfaction, we offer unlimited revisions and rewrites without extra charges.

Timely delivery of papers

Tight deadline? Is your paper due in the next few hours? Worry no more. Our writers are here for your rescue. Many college students find it hard to balance their social and academic life and get caught up with academic deadlines. Drafting your paper at the last minute does not allow you to conduct extensive research and craft the correct answers. We have expert writers ready to work on your assignment writing. Urgent writing services are the ultimate solutions you need. We guarantee you timely delivery of papers at your convenience and specified time delivery of the customer.

100% Original Tasks

The ultimate deal-breaker in achieving good grades is submitting imitative papers. Plagiarism is a breach of examination standards and has serious consequences. Students need to deliver papers written in their understanding by paraphrasing their research findings and relevant citations. Our expert's primary consideration is providing free plagiarized papers that meet the lecturers' requirements. Our editors will proofread your paper before delivery ad ensure your papers will not be substandard. We guarantee extreme originality, and in case of any customer concerns, we offer a plagiarism report.

All Round the clock Customer Support

Our website is user-friendly and super useful! Mycoursewriter is the most trusted online writing website always available to provide you with assignment writing services that you need. Our primary concern is meeting customer need specifications by our friendly customer support team that Is available all the time. Our website usability is self-learnable but in case of any problem, feel free to contact us directly through our website email: We have diligently satisfied thousands of students, and you can witness this on our sites' review page.

Try it now!

Calculate the price of your order

We'll send you the first draft for approval by at
Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Advantages of Using Our Assignment writing Services

Mycoursewriter welcomes you for superb essay writing services. We are a legit site offering help with your most challenging homework writing assignments at affordable prices. Your essay paper will be assigned to a professional writer who will craft the paper from scratch according to your provided instructions.


Essay Writing and Proofreading Services

Essay writing is a common assignment writing for most college students. It takes a lot of time to craft a complete perfect essay. Mycourserwiter offers the best essay writing and proofreading services for most college students. Your paper is assigned to an expert writer who does thorough research on fresh ideas and personalizes your essay paper according to your assignment writing guidelines. Our essays are entirely exceptional and undergo a strict procedure that includes papers free from plagiarism and thorough proofreading.


Admission and Business Papers

Writing an admission paper is not every student's desire, and this should not hinder any student from earning an admission. Writing a perfect personal statement to earn a position in a dream school or job can be stressful. Personal statements should display a high level of confidence and uniqueness. Admission essays require you to have a vast knowledge of the current happenings in the world and knowhow of the business world. We have qualified writers with skills who will write your admission paper through comprehensive research. All you have to do is provide us with little details about yourself, instructions and our writers will craft a perfect paper for you.


Editing and Proofreading

Mycoursewriter offers you assignment writing services free from grammatical and formatting mistakes. An error-free paper is significant in scoring the desired maximum grades. We have a team of editors who will go through your paper after our expert writers have delivered their fully crafted papers. Our writers will cover all the aspects of your paper instructions, such as fonts, spacing, and educational formats. Our team of editors will check through your paper to make sure it meets the formatting style provided in the paper instructions. Under no circumstances will a poorly formatted paper will be forwarded to you as our team of editors will ensure careful proofreading.


Technical Papers

Assignment writing is part of a learning process, and one may not have the knowledge to answer all questions correctly. This should not be a stress to you as we have qualified essay writing experts to help you. Our qualified writers are holders of PhDs, Degrees, and Masters in different areas of study and can handle any papers regardless of the complexity. Multiple assignments may be challenging to finish on time. Our skilled professional writers are here to assist you in crafting all the correct answers for your assignment. Stop stressing about your homework writing and place an order with us, and our expert writers will provide you with the best assignment help.