Question

what will be the concentration of a solution which is made by mixing 25 ml of 0.2 molarity H2 S 04, 25 ml of 0.25 molarity of H2 s o4, and 45 ml of 0.35 molarity of H2 s o4?​

Answer 1

Answer:

No. of moles in 0.05 liter of H

2

SO

4

= M×V(inliter)

= 0.5×0.05

= 0.025

No. of moles in 0.075 liter of H

2

SO

4

added

= 0.25×0.075

= 0.01875

Total no. of moles in 0.125 liter of H

2

SO

4

= 0.025 + 0.01875

= 0.04375

∴ Molarity of H

2

SO

4

=

0.0125

0.04375

= 0.35 M

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