A hydrated metal chloride contains 27.8%metal and 48.5% halogen by weight.Specific heat ofmetal (M) is 0.67jg^(-1) . What is the valency of the metal?

A hydrated metal chloride contains 27.8%metal and 48.5% halogen by wei

1.	A hydrated metal chloride contains 27.8%metal and 48.5% halogen by weight.Specific heat ofmetal (M) is 0.67jg^(-1) . What is the valency of the metal?
Answer» Solution :SPECIFIC HEAT of M =0.67 `jg^(-1)` =0.16cal `g^(-1)` ATOMIC MASS of M = 6.4/0.16=40 Relative number of M atoms `=(27.8)/(40)=0.695` Relative number of Cl atoms `=(48.5)/(35.5)=1.37` Ratio of number of atoms, of M and C =0.695 :1.37=1:2 FORMULA of metal chloride is `MCl_(2)` Valency of metal is 2