Which of the following solution contains approximately equal hydrogen ion concentration

Options

A. `100 mL of 0.1 M HCl + 50 mL H_(2) O`
B. `75 mL of 0.1 M HCl + 75 mL H_(2) O`
C. `50 mL of 0.1 M H_(2) SO_(4) + 100 mL H_(2)`
D. `100 mL of 0.1 NH_(2)SO_(4) + 50 mL H_(2) O`

Answer

C, D

Explanation

a. `100 xx 0.1 = 10 "mmol" H^(o+)//150 mL`
b. `75 xx 0.1 = 7.5 "mmol" H^(o+)//150 mL`
c. `50 xx 0.1 xx 2` (`n` factor) `= 10 "mmol"//150 mL`
d. `100 xx 0.1 = 100 "mmol"//150 mL`