Answer to Question #108021 in General Chemistry for Beverlie

Question

1. Calculate the pH of stomach acid in which [HCl] = 0.155 M .

Answer 1

Answer:

pH=-lg[H⁺]

[H+]=[HCl]=0.155M, because HCl is a strong acid in aqueous solutions, which will be considered gastric juice for ease of calculation.

pH=-lg(0.155)=0.8

So, the pH of stomach acid is 0.8.