1.

N-Butaneis producedby monobromination ofethanefollowedby the Wurtz reaction, calculatethevolume of ethane at NTP required to prduce 55 g n- butane,if the brominatiintakes placewith 90% yield and the Wrtz reactionwith 85% yield .

Answer»

Solution :` {:(C_(2)H_(6),+Br_(2)to, C_(2)H_(5)BR+HBr","),(30g,,109g):}`
`{:( 2C_(2) H_(5) Br+2Na to, C_(4)C_(10)+2NaBr),(2xx109g,58g):}`
55 g butanewill be PRODUCTS from
`(2xx109)/(58)xx55g` ethyl bromide
As the yeeld is 85% the actual ethyl bromiderequired
`(2xx109)/(58)xx55xx100(100)/(85)=243.2g`243.2 g of ethy, bromide will producedfrom
`=(30)/(109)xx243.2=66.93`g ethane
As the yieldis 90 , theacturalethanerequired
`=(100)/(90)xx66.93=74.37 g`
Volume of the ethaneAt NTP`=(74.37)/(30)xx22.4=55.5L]`*


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