Question

100 mL
sol
alcohal cs
ول= 2).
mlec
is prepared by mola
addling
25
g
of CHE OH
then
find the
Omolality
2​

Answer 1

Answer:

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Asked on December 20, 2019 by

Arushi Deeksha

The normality of solution obtained by mixing 100 mL of 0.2 M H

2

SO

4

with 100 mL of 0.2 M NaOH is:

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ANSWER

Normality= Molarity × Valency factor ..........(1)

Valency factor for H

2

SO

4

=2 and that of NaOH=1

∴N

1

of H

2

SO

4

=0.2×2=0.4

N

2

of NaOH=0.2×1=0.2

We have, N

1

V

1

+N

2

V

2

=N

R

V

R

⟶(2)

V

R

=100+100=200

∴ by equation (2),we get,

0.4(100)+0.2(100)=N

R

(200)

∴40−20=N

R

×200

∴ Normality of resultant solution N

R

=0.1

Hence, the correct option is A