Purchase Solution

Acid/Base

Not what you're looking for?

Ask Custom Question

You want to make a 0.1M acetate buffer from 0.1M solutions of acetic acid and acetate. How many mL of acetic acid would you need per liter of solution (with the rest of the volume coming from the acetate solution) to generate a pH of 4.75? The pKa of acetic acid is 4.76

Purchase this Solution
Solution Preview

The simple answer is that since the pH of the solution we want is SO CLOSE to the pka of acetic acid, that you'd use almost an equal volume of 0.1M acetate and 0.1M acetic acid. However, let's show how this works out through the use of the Henderson-Hasselbalch equation.

pH = pKa + log [salt]/[acid]

What we want to find out is the ratio of [salt] to [acid] to use to generate the solution.

What do we know?

We know the pH we want and we know the ...

Purchase this Solution
Free BrainMass Quizzes
Comfort Measures For Labor

Are you ready to doula someone through labor?

Infant Development: Sleep

How much do you know about infant sleep? Test your knowledge with this quiz.

Human Anatomy- Reproductive System

Do you know your reproductive anatomy?

BioChemistry Basics

This Quiz will test your knowledge of the amino acids used in biological systems

Pregnancy Knowledge

How much do you know about being pregnant? Test your Pregnancy IQ with this quiz!

View More Free Quizzes
Related BrainMass Solutions

  • Calculating molarity in an acid/base titration.

    The general formula for this type of question is M(base)V(base)=M(acid)V(acid).

  • Finding pH at equivalence - Acid Base Titrations

    the titration of a strong acid by a strong base b. the titration of a strong base by a strong acid c. the titration of a weak acid by a strong base d. the titration of a weak base by a strong acid e.

  • Strong Acid, Strong base Titration

    Sodium hydroxide (NaOH) is a strong base and hydrochloric acid (HCl) a strong acid.

  • Conjugate Acid-Base Pairs

    21528 Conjugate Acid-Base Pairs 1. Conjugate Acid-Base Pairs. Identify the conjugate acid-base pairs in each of the following reactions. Label each species as an acid or a base. a. NH4+(aq) + CN-(aq) --> NH3(aq) + HCN(aq) b.

  • Explain in molecular terms strong acid base and week acid base.

    297834 Explain in molecular terms strong acid base and week acid base. [about 100 words] Explain in molecular terms the difference between a strong acid and a weak acid, and between a strong base and a weak base.

  • Buffers

    173904 Buffer prepared by adding strong acid to excess weak base 2. A buffer can be prepared by adding strong acid to excess weak base or by adding a strong base to excess weak acid. Please explain.

  • Predict if solution is acidic, basic or nearly neutral.

    Because the solution contains the conjugate base of a weak acid. Therefore, in this example, CH3CO2- reacts with H2O to form acetic acid and hydroxide ion, the base.

  • Hydrolysis of salts

    If you form a strong acid then it is acidic, if you form a strong base it is basic, if you form both a strong acid and base then the solution is neutral. NH4 NO3 + H2O --> NH4OH (strong base) + HNO3 (strong acid) neutral solution!

  • Molecular and ionic equations

    The expert names to formulas from acid base reactions.

  • Acid base titrations and pH.

    So molar concentration of acid [acid] = 0.20/25*10-3 [Acid] = 8 Molar concentration of base [base] NH3 = 0.20/30*10-3 [Base] = 6.667 And also we know that

View More Related Solutions