Chapter 9, Problem 9.39P

a)

Interpretation Introduction

Interpretation:

The best solution has to be chosen to bring the $\text{pH}$ to $\text{7}\text{.45}$ for $\text{0}\text{.0500}\text{M}\text{HEPES}$ .

To choose the best solution that can bring the $\text{pH}$ to $\text{7}\text{.45}$ for $\text{0}\text{.0500}\text{M}\text{HEPES}$

b)

Interpretation Introduction

Interpretation:

The preparation of $\text{0}\text{.250}\text{L}$ of $\text{0}\text{.0500}\text{M}\text{HEPES}$ with $\text{pH}\text{of}\text{7}\text{.45}$ has to be described.

To describe the preparation of $\text{0}\text{.250}\text{L}$ of $\text{0}\text{.0500}\text{M}\text{HEPES}$ with $\text{pH}\text{of}\text{7}\text{.45}$