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dybincka [34]
3 years ago
12

How much energy is released when 0.40 mol C6H6(g) completely reacts with oxygen? 2C6H6(g) + 15O2(g) 12CO2(g) + 6H2O(g) kJ

Chemistry
1 answer:
Sladkaya [172]3 years ago
7 0

Answer:

-1268 kJ

Explanation:

The molar enthalpy of combustion of C6H6 is -3170 kJ/mol

2C6H6(g) + 15O2(g) → 12CO2(g) + 6H2O(g)

Therefore;

when 1 mole of C6H6 undergoes combustion, an energy of -3170 kJ/mol is released.

Therefore; for 0.40 mole

= 0.4 × -3170 kJ

= -1268 kJ

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