Question

20 mL of 0.05 M HCl and 30 mL of 0.05 M Ca(OH)2 are
mixed and water is added to obtain a solution having
volume equal to 100 mL. Find the pH of this solution (use
pKw = 14)​

Answer 1

Answer:

Correct option is C)

M

1

V

1

+M

2

V

2

=M

R

(V

1

+V

2

)

where M

R

= resultant molarity of the mixture.

⇒0.5×20+0.3×30=M

R

×50

M

R

=0.38 M

Hence, the correct option is C