Analytical Chemistry Question 275
Question: What is the molarity of $ H_2SO_4 $ solution if 25 ml is exactly neutralised with 32.63 ml of 0.164 M, NaOH
[DCE 2003]
Options:
A) 0.107 M
B) 0.126 M
C) 0.214 M
D) -0.428 M
Show Answer
Answer:
Correct Answer: A
Solution:
$ 0.164\ M\ NaOH\ \cong \ 0.164\ N\ NaOH $ We know, $ N_1V_1=N_2V_2; $
$ N_1\times 25=0.164\times 32.63 $
$ 0.214\ N\ H_2SO_4\cong \frac{0.214}{2}M\ H_2SO_4 $ ( $ \because $ basicity of $ H_2SO_4\ is\ 2 $ ) $ \cong \ 0.107\ M\ H_2SO_4 $
BETA
