Question

Mass of oxygen required for the complete
combustion of 3 kg of ethane is
(1) 11.2 kg
(2) 6 kg
(3) 15.5 kg
(4) 7.2 kg​

Answer 1

Answer:

1.

Ethene+3

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

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(ethylene)

Gram atomic mass of ethylene () =

Gram atomic mass of oxygen

For oxidizing 1 mol of ethylene we require 3 moles of Oxygen

∴ For oxidizing 28g of ethylene we require (3×32)g of oxygen

∴ For oxidizing 2800g of ethylene we require (96×100)g of oxygen

∴For oxydising 2.8kg of ethylene we require 9600g of oxygen

∴For oxydising 2.8kg of ethylene we require 9.6kg of oxygen

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