Chemistry, 31.03.2020 01:01 nestergurl101
A chemistry graduate student is given 500.mL of a 0.40M chlorous acid HClO2 solution. Chlorous acid is a weak acid with =Ka×1.110−2. What mass of NaClO2 should the student dissolve in the HClO2 solution to turn it into a buffer with pH =2.11?
Answers: 3
should be, 23.5 grams.
= 0.40 M
.
in this expression, we get:
![pH=pK_a+\log \frac{[Salt]}{[Acid]}](/tpl/images/0572/2296/e961a.png)
![pH=pK_a+\log \frac{[NaClO_2]}{[HClO_2]}](/tpl/images/0572/2296/a8df0.png)
![2.11=2.0+\log (\frac{[NaClO_2]}{0.40})](/tpl/images/0572/2296/3a0b0.png)
![[NaClO_2]=0.52M](/tpl/images/0572/2296/2adfa.png)
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A chemistry graduate student is given 500.mL of a 0.40M chlorous acid HClO2 solution. Chlorous acid...
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