Question

V.D.of a volatile substance is 4 in comparison to methane (CH4=1)
what will be its molecular mass..?

Answer 1

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ANSWER:---------------

{molar mass 2VD}

{ methane CH4 molar mass =16So, vapour density}

16/2=8

8×4=32

{ 1628Here relative vapour density is 4 for the substance i.e four times the methane 8432}

{Hence Molar mass of the substance }=[[ 2×32={64}

hope it helps:--

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Answer 2

molar mass 2VD

molar mass 2VDmethane CH4 molar mass =16So, vapour density

molar mass 2VDmethane CH4 molar mass =16So, vapour density16/2=8

molar mass 2VDmethane CH4 molar mass =16So, vapour density16/2=88×4=32

molar mass 2VDmethane CH4 molar mass =16So, vapour density16/2=88×4=321628Here relative vapour density is 4 for the substance i.e four times the methane 8432

molar mass 2VDmethane CH4 molar mass =16So, vapour density16/2=88×4=321628Here relative vapour density is 4 for the substance i.e four times the methane 8432Hence Molar mass of the substance =2×32=64