1.

`n-`Butane `(C_4H_(10))` is produced by monobromination of `C_2H_6` followed by Wurtz reaction. Calculate the volume of ethane. The bromination takes place with `90%` yeild and the wurtz reaction with `85%` yield.A. 27.75 litresB. 55.5 litresC. 111 litresD. 5.55 litres

Answer» Correct Answer - B
`2C_2H_6+Br_2rarr2C_2H_5Br+HBroverset(2Na)toC_4H_(10)`
`12xx4+10=58gm`
58 gm of n-butene `implies2xx22.4` litre of `C_2H_6` at STP
i.e., `2xx22.4xx(100)/(85)xx(100)/(90)`
`=58.56` litre at STP
`58gm` of n-butate`=58.56` litre
`55gm` of n-butane`=55.5` litre


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