Question

10
Equal volumes of 0.005 M and 0.01 M H2SO, solutions are mixed together. The pH of
resulting solution is -
(A) 5.0
(B) 3.177
(C) 4.1
(D) 2.177​

Answer 1

QUESTION;-

Equal volumes of 0.005 M and 0.01 M H2SO, solutions are mixed together. The pH of

resulting solution is -

(A) 5.0

(B) 3.177

(C) 4.1

(D) 2.177n

ANSWER;-

12.65

Explanation:-

when equal volume of 0.1 M NaoH and 0.01 MHCl

are mixed,the hydroxide ion concentration is

0.1-0.01/ 2 =0.045M

the pOH of the solution is pOH =

-log [HO -] =-log0.045=1.35

the pH of the solution is pH =

pOH= 14 - 1.35 = 12.65