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Relative decrease in vapour pressure of ...

Relative decrease in vapour pressure of an aqueous solution containing 2 moles `[Cu(NH_3)_3Cl]` Cl in 3 moles `H_2O` is 0.50. On reaction with `AgNO_3` this solution will form (assuming no change in degree of ionisation of substance on adding `AgNO_3`).

A

1mol AgCl

B

0.25mol AgCl

C

0.5 mol AgCl

D

0.40 mol AgCl

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