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The enthalpy of combustion of methane at...

The enthalpy of combustion of methane at `25^(@)C` is 890 kJ. The heat liberated when 3.2 g of methane is burnt in air is

A

445kJ

B

278kJ

C

`-890kJ`

D

178kJ

Text Solution

Verified by Experts

The correct Answer is:
D

16 g of methane liberates heat - 890 kJ
  3.2 g of methane liberates heat =`(890xx3.2)/(16)` =178kJ.
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