Given the following information, what is the pH
Ratio of [HCO₃-]/[CO₂] = 20/0.5
PK = 6.1
Log of 10 = 1.0
Log of 20 = 1.3
Log of 40 = 1.6
A)pH = 7.0
B)pH = 7.4
C)pH = 7.7
D)It is impossible to determine the pH with the information provided.

Question

Quizplus · Accepted Answer

We can use the Henderson-Hasselbalch equation to calculate the pH:

pH = pK + log([HCO₃-]/[CO₂])

Substituting the given values, we get:

pH = 6.1 + log(20/0.5) 
pH = 6.1 + log(40) 
pH = 6.1 + 1.6 
pH = 7.7

Therefore, the pH is 7.7.

Given the Following Information, What Is the PH