Question

Which of the following would be the best buffer at the indicated pH? View Available Hint(s) 0. 200 M HClO ($K_a = 2.9 \times 10^{-8}$) and 0.200 M NaClO at about pH = 5.10 1. 200 M $C_6H_5CO_2H$ ($K_a = 6.5 \times 10^{-5}$) and 0.200 M $C_6H_5CO_2K$ at about pH = 5.10 2. 0500 M HClO ($K_a = 2.9 \times 10^{-8}$) and 0.0500 M NaClO at about pH = 5.10 3. 0500 M $C_6H_5CO_2H$ ($K_a = 6.5 \times 10^{-5}$) and 0.0500 M $C_6H_5CO_2K$ at about pH = 5.10

Name: which of the following would be the best buffer at the indicated ph view available hints 0 200 m hclo ka 29 times 10 8 and 0200 m naclo at about ph 510 1 200 m c6h5co2h ka 65 times 10 5 32683
Uploaded: 2023-07-11T14:01:44-08:00
Duration: 10 min 25 s
Channel: Isaac Huidobro
Description: which of the following would be the best buffer at the indicated ph view available hints 0 200 m hclo ka 29 times 10 8 and 0200 m naclo at about ph 510 1 200 m c6h5co2h ka 65 times 10 5 32683

          Which of the following would be the best buffer at the indicated pH?
View Available Hint(s)
0.  200 M HClO ($K_a = 2.9 \times 10^{-8}$) and 0.200 M NaClO at about pH = 5.10
1.  200 M $C_6H_5CO_2H$ ($K_a = 6.5 \times 10^{-5}$) and 0.200 M $C_6H_5CO_2K$ at about pH = 5.10
2.  0500 M HClO ($K_a = 2.9 \times 10^{-8}$) and 0.0500 M NaClO at about pH = 5.10
3.  0500 M $C_6H_5CO_2H$ ($K_a = 6.5 \times 10^{-5}$) and 0.0500 M $C_6H_5CO_2K$ at about pH = 5.10

which of the following would be the best buffer at the indicated ph view available hints 0 200 m hclo ka 29 times 10 8 and 0200 m naclo at about ph 510 1 200 m c6h5co2h ka 65 times 10 5 32683

Added by Alvin B.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Isaac Huidobro

07/11/2023

Step 1

The Henderson-Hasselbalch equation is: $$pH = pK_a + log \frac{[A^-]}{[HA]}$$ When $[A^-] = [HA]$, pH = pKa. Show more…

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Which of the following would be the best buffer at the indicated pH? View Available Hint(s) 0. 200 M HClO ($K_a = 2.9 \times 10^{-8}$) and 0.200 M NaClO at about pH = 5.10 1. 200 M $C_6H_5CO_2H$ ($K_a = 6.5 \times 10^{-5}$) and 0.200 M $C_6H_5CO_2K$ at about pH = 5.10 2. 0500 M HClO ($K_a = 2.9 \times 10^{-8}$) and 0.0500 M NaClO at about pH = 5.10 3. 0500 M $C_6H_5CO_2H$ ($K_a = 6.5 \times 10^{-5}$) and 0.0500 M $C_6H_5CO_2K$ at about pH = 5.10