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Van't Hoff Factor

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A crystalline salt when heated becomes anhydrous and loses 51.2% of its weight. The anhydrous salt on analysis gave the percentage composition as Mg-20.0% S-26.66% and O-53.33% Calculate the molecular formula of the anhydrous salt and the crystalline salt. Molecular mass of anhydrous salt is 120

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Q. A crystalline hydrated salt on being rendered anhydrous, loses 45.6% of its weight. The percentage composition of anhydrous salt is : Al = 10.5%, K = 15.1%, S = 24.8% and I = 49.6%. Find the empirical formula of the salt.

Q. A crystalline hydrated salt on being rendered anhydrous loses 45.6% of its weight.
The percentage composition of the anhydrous salt is:

A l = 10.5 %, K = 15.1 %, S = 24.8 %

= 49.6 %

A l = 27, K = 39, S = 32

].

What is the empirical formula of the salt?

Q. The crystalline salt

N a_{2} S O_{4} . x H_{2} O

on heating loses 55.9% of its mass and becomes anhydrous. The formula of the crystalline salt is:

Q. The crystalline salt

N a_{2} S O_{4} . x H_{2} O

on heating loses 55.9% of its mass and becomes anhydrous. The formula of the crystalline salt is:

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