Question

What is mass of oxygen is required for complete combustion of 2.8kg of ethylene?

Answer 1

Answer:

1 kg of ethylene will need (0.096/0.028) = 3.42 kg of oxygen. So, 2.8 kg of ethylene will need (3.42 x 2.8) = 9.6 kg of oxygen.

Answer 2

Answer:

Combustion of Ethylene can be written as:

C2H4 + 3 O2 → 2 CO2 + 2 H2O

0.028 kg (Molar mass of ethylene) needs 3 x 0.032 = 0.096 kg of oxygen.

1 kg of ethylene will need (0.096/0.028) =  3.42 kg of oxygen.

So, 2.8 kg of ethylene will need (3.42 x 2.8) =  9.6 kg of oxygen.