Acids And Bases

The correct answer is option (C): 2.5

100%5C%2C%20mL

of a

HCl

solution of

p%20H%3D2

%5CRightarrow%5Cleft%5BH%5E%7B%2B%7D%5Cright%5D%3D10%5E%7B-2%7D%20400%5C%2C%20mL

of a

HCl

solution of

pH%3D3

%5CRightarrow%5Cleft%5BH%5E%7B%2B%7D%5Cright%5D%3D10%5E%7B-3%7D

Resulting

%5Cleft%5BH%5E%7B%2B%7D%5Cright%5D%3D%5Cfrac%7B100%20%5Ctimes%2010%5E%7B-2%7D%2B400%20%5Ctimes%2010%5E%7B-3%7D%7D%7B500%7D

%3D%5Cfrac%7B1%2B0.4%7D%7B500%7D

%3D%5Cfrac%7B1.4%7D%7B500%7D%3D0.0028

%5Cbecause%20p%20H%3D-%5Clog%20%5Cleft%5BH%5E%7B%2B%7D%5Cright%5D%20%5Ctherefore%20p%20H%3D-%5Clog%20(0.0028)

%3D2.5

Chapter Questions
1 MCQs