How much energy is released when 6 moles of octane is burnt in air given deltas formation for c2 h2 and c8 h18 are respectively - 419 - 240 + 160 joule per mole?
Answers
Answered by
23
Dear student,
● Answer -
Energy released = -37.44 kJ
● Explanation -
Combustion of 6 moles of octane is given by reaction -
6C8H18 + 75O2 --> 48CO2 + 54H2O
Energy released is calculated by -
∆H(reaction) = 48 × ∆H(CO2) + 54∆H(H2O) - 6∆H(C8H18) - 75∆H(O2)
∆H(reaction) = 48 × (-490) + 54 × (-240) - 6 × (160) - 75 × 0
∆H(reaction) = -37440 J
∆H(reaction) = -37.44 kJ
Therefore, -37.44 kJ energy is released when 6 moles of octane burn in air.
Hope this helped...
● Answer -
Energy released = -37.44 kJ
● Explanation -
Combustion of 6 moles of octane is given by reaction -
6C8H18 + 75O2 --> 48CO2 + 54H2O
Energy released is calculated by -
∆H(reaction) = 48 × ∆H(CO2) + 54∆H(H2O) - 6∆H(C8H18) - 75∆H(O2)
∆H(reaction) = 48 × (-490) + 54 × (-240) - 6 × (160) - 75 × 0
∆H(reaction) = -37440 J
∆H(reaction) = -37.44 kJ
Therefore, -37.44 kJ energy is released when 6 moles of octane burn in air.
Hope this helped...
Answered by
1
Answer:
answer is -37.4 kilo joules
explanation is done by another user
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