How many moles of isooctane must be burned to produce 100 kJ of heat under standard state conditions? Show all of your work.

Question

Justice Mathews

Chemistry

24 March, 21:47

How many moles of isooctane must be burned to produce 100 kJ of heat under standard state conditions? Show all of your work.

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Answers (1)

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Claire King · Answer 1

According to Prosen and Rossini, 1945, the standard heat of combustion of isooctane is - 5461.3 kJ/mol. The negative sign is just to depict that there was a release of energy. Thus, to produce 100 kJ energy,

100 kJ : 5461.3 kJ/mol isooctane = 0.0183 moles isooctane.

0.0183 moles of isooctane must be burned.

I hope I was able to answer your question J