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Chemistry Question on Thermodynamics

The energy released when 6 moles of octane is burnt in air will be [Given, ΔHf for CO2(g), H2O(g), and C8H18(l), respectively are -490, -240, and +160 J/mol].\text{[Given, } \Delta H_f \text{ for CO}_2\text{(g), H}_2\text{O(g), and C}_8\text{H}_{18}\text{(l), respectively are -490, -240, and +160 J/mol]}.

A

-37.4kJ

B

-20 kJ

C

-6.2 kJ

D

-35.5 kJ

Answer

-35.5 kJ

Explanation

Solution

The correct option is (D):-35.5 kJ