0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc

0037g Of An Alcohol Roh Was Added To Chmgl And Chemistry Question0037g Of An Alcohol Roh Was Added To Chmgl And Chemistry Question

0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc at STP. The molecular mass of R-OH will be

Options

(a) 47
(b) 79
(c) 77
(d) 74

Correct Answer:

74

Explanation:

R—OH + C₂H₅Mgl → C₂H₆ + RMgl
0.037 11.2 cc
11.2 cc gas evolved by alcohol= 0.037 g
22400 cc gas will be evolved by alcohol
= 0.037/11.2 x 22400
= 74 g

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