Specific heat of a metal is 0.115 cal K^(-1) . If the weight percentage of metal in metal oxide is 77.28, determine the valency of metal.

Specific heat of a metal is 0.115 cal K^(-1) . If the weight percentag

1.	Specific heat of a metal is 0.115 cal K^(-1) . If the weight percentage of metal in metal oxide is 77.28, determine the valency of metal.
Answer» Solution :Approximate ATOMIC mass of metal `=(6.4)/("specific HEAT")=(6.4)/(0.115)=55.65` In 100 G of metal oxide, weight of metal =77.28g Weight of oxygen =22.22g `(W_(i))/(W_(2))=(E_(1))/(E_(2))` Equivalent weight of oxygen =8 Equivalent weight of metal `=(77.28)/(22.22)xx8=27.82` Valency of meta `=("approximate atomic weight ")/("equivalent weight") =(55.62)/(27.82)=2`