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n-Butance (C(4)H(10)) is produced by mon...

`n-`Butance `(C_(4)H_(10))` is produced by monobromation of `C_(2)H_(6)` followed by the Wurtz reaction. Calculate the volume of ethane at `STP` requried to produce `55 g` of n-butane. The bromination takes place with 90% yield and the Wurtz reaction with 85% yield.

A

`27.75 L`

B

`55.5 L`

C

`111 L`

D

`5.55 L`

Text Solution

Verified by Experts

The correct Answer is:
B
`2C_(2)H_(6) + Br_(2) rarr underset(underset(underset(12 xx 4 + 10 = 58g)(C_(4)H_(10)))(darr 2Na))(2C_(2)H_(5) Br + HBr)`
`58 g` of `n`-butane `implies 2 xx 22.4 L "of" C_(2)H_(6)` at `STP`
`implies 2 xx 22.4 xx (100)/(85) xx (100)/(90)`
`58 g` of n-butane `= 58.56 L`
`55 g` of n-butane `= 55.5 L`
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