Question

Crude calcium carbide is made in an electric furnace by the following reaction
The product contains 80% and 20% unreacted CaO.

Answer 1

100 g of crude product contains

56

15

=0.27 moles of CaO and

64

85

=1.3moles of CaC

2

.

Thus, to get 100 g of crude mixture, we should start with 0.27+1.3=1.57 moles of CaO.

Thus, to get 450 kg of crude mixture, we should start with

100

450

×1.57=394 kg of CaO

Explanation:

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