Purchase Solution

Volume of an acid required to change the pH of a buffer solution

Not what you're looking for?

Ask Custom Question

What volume (in mL) of 0.37M HCI solution must be added to 265.00 mL 0.29M ammonia solution to give a buffer solution with pH 9.1? (Kb for ammonia 1.80e-5) 1.80 x10^-5

Purchase this Solution

Solution Summary

Full solution using the equation to calculate the pH of a buffer solution is pH = pKa - log [HA]/[A-]. 400 words.

Solution Preview

The equation to calculate the pH of a buffer solution is:
pH = pKa - log [HA]/[A-]
The most important thing here is to recognize what our buffer system is. This is going to be an NH4+/NH3 buffer, where the acid component is NH4+ (HA), and the base component or the "anion" is NH3. Only NH4+ can be HA, i.e. an acid (we're looking for a weak acid), because NH4+ can lose a proton and become NH3. The pKa of a conjugate acid formed from a base (in this case NH4+ formed from NH3 can be calculated from the ...

Purchase this Solution


Free BrainMass Quizzes
Functional groups in Organic Chemistry

You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.

Thermochemistry

The quiz helps in revising basic concepts about thermochemistry.

Organic Chemistry Naming: Alkanes

This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.

Match Elements with their Symbols

Elements are provided: choose the matching one- or two-letter symbol for each element.