Relationship between Vapor Density & Relative Molecular Mass
A metal M for...
Question
A metal M forms a volatile chloride containing 65.5% chlorine. If the density of the chloride relative to hydrogen (i.e., V.D.) is 162.5, the molecular formula of the chloride is:
[M=56;Cl=35.5]
A
MCl3
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B
MCl6
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C
M2Cl6
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D
M2Cl3
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Solution
The correct option is CM2Cl6 As we know, Molar mass = 2 x vapour density 2×162.5=325g Mass of Cl in compound =0.655×325=213g Mass of metal =325−213=112g So, compound is M2Cl6.