Question

A solution of hcl was 10 percent volume by volume. After adding 100 ml of hcl it became 20%.Find the original volume of solution and amount of hcl in it.​

Answer 1

original volume: 2000 ml

original volume of hcl: 100 ml

Answer 2

Explanation:

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

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