Formation of polyethylene from calcium carbide takes place as follows array l CaC ₂+2 H ₂ O Ca ( OH )₂+ C ₂ H ₂ C ₂ H ₂+ H ₂ C ₂ H ₄ nC ₂ H ₄ (- CH ₂- CH ₂- )_ n array The amount of polyethylene obtained from 64.1 ~kg of CaC ₂ is

Step-by-step solution

The concerned chemical reactions are (i) 64 ~kg CaC ₂+2 H ₂ O Ca ( OH )₂ + Ethyne, 26 ~kg C ₂ H ₂ (ii) C ₂ H ₂+ H ₂ Ethylene , 28 ~kg C ₂ H ₄ (iii) nC ₂ H ₂ [- CH ₂- CH ₂- ]_ n array ll n 28 ~kg & n 28 ~kg polythene or 28 ~kg & or 28 ~kg array Thus 64 ~kg of CaC ₂ gives 26 ~kg of acetylene which in turn gives 28 ~kg of ethylene whose 28 ~kg gives 28 ~kg of the polymer, polythene.