1.

What would be the amount of polythene formed from 20 kg of calcium carbide from the reactions given below? CaC_2 + 2H_2O to Ca(OH)_2 + C_2H_2 HC-=CH+ H_2 overset(Pb-BaSO_4)to CH_2=CH_2 nCH_2 = CH_2 to underset("Polythene ")(--CH_2-CH_2 --)_n

Answer»

28g
6g
9kg
64kg

Solution :Molecular WEIGHT of `CaC_2=40 + 24=64`
64 KG of `CaC_2` gives , 24 + 4 = 28 kg of ethene
20 kg of `CaC_2` GIVE , `(28)/(64) XX 20 =( 7 xx 20)/(16) = (35)/(4) = 8.75 kg `
=9 kg polythene


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