14 Question 14 Tries remaining 2 Points out of 1.00 Flag question What is the ratio of base to acid needed to obtain...

Question

Question

14

Answer 1

Answer #1

Ka = 5.88*10^-6

pKa = - log (Ka)

= - log(5.88*10^-6)

= 5.231

use:

pH = pKa + log {[conjugate base]/[acid]}

5.59 = 5.231+log {[C5H5N]/[HC5H5N+]}

log {[C5H5N]/[HC5H5N+]} = 0.3594

[C5H5N]/[HC5H5N+] = 2.288

Answer: 2.29

Answer 2

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