1.

116 mg of a compound onvaporisation is used for a Victor Mayer's apparatus displaces 44.8 mlof air measured at S.T.P. The molecularweight ofthe compound is

Answer»

116
232
58
44.8

Solution :`116 mg` compound means `116 XX 10^(-3) gm` compound since `1 mg` CONTAIN`10^(-3)` gm
Mol. WT. of compound
`= (" mass of the substance")/(" volume of the vapour at S.T.P") xx 22400`
`= (116 xx 10^(-1))/(44.8) xx 224000 = 58`.


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