Q35P A buffer was prepared by dissolv... [FREE SOLUTION]

Chapter 9: Q35P (page 209)

A buffer was prepared by dissolving 0.100 mole of the weak acid $H A (K_{a} = 1.00 脳 10^{- 5})$ plus 0.050 mole of its conjugate base ${Na}^{+} A^{-}$ in 1.00 L. Find the pH

Short Answer

Expert verified

The solution of $pH = 4.70$

Step by step solution

Define buffer:

A buffer is a solution that can withstand pH changes when adding acid or basic nutrients . $pH = {pK}_{a} + \log_{10} \frac{[A^{-}]}{[HA]}$

Find pHa:

$Find {pK}_{a} pH = {pK}_{a} + \log ([A^{-}]) / [HA] {pK}_{a} = - \log (K_{a}) = - \log (1 脳 10^{- 5}) = 5.00 Substitute above value in pH pH = {pK}_{a} + \log ([A^{-}]) / [HA] pH = 5.00 + \log (0.05 / 0.1) The solution is pH = 4.70$

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Recommended explanations on Chemistry Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

91影视

A buffer was prepared by dissolving 0.100 mole of the weak acid $H A (K_{a} = 1.00 脳 10^{- 5})$ plus 0.050 mole of its conjugate base ${Na}^{+} A^{-}$ in 1.00 L. Find the pH

Short Answer

Step by step solution

Define buffer:

Find pHa:

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Kinetics

Inorganic Chemistry

Chemistry Branches

Chemical Analysis

The Earths Atmosphere

Nuclear Chemistry

Study anywhere. Anytime. Across all devices.

91影视

A buffer was prepared by dissolving 0.100 mole of the weak acid HA(Ka=1.00脳10-5)plus 0.050 mole of its conjugate baseNa+A-in 1.00 L. Find the pH

Short Answer

Step by step solution

Define buffer:

Find pHa:

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Kinetics

Inorganic Chemistry

Chemistry Branches

Chemical Analysis

The Earths Atmosphere

Nuclear Chemistry

Study anywhere. Anytime. Across all devices.

A buffer was prepared by dissolving 0.100 mole of the weak acid $H A (K_{a} = 1.00 脳 10^{- 5})$ plus 0.050 mole of its conjugate base ${Na}^{+} A^{-}$ in 1.00 L. Find the pH