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A propane-air mixture is being burned at 1 atmosphere. The maximum temperature at this time is about 2278K, which appears at the point where the

A propane-air mixture is being burned at 1 atmosphere. The maximum temperature at this time is about 2278K, which appears at the point where the equivalence ratio is about 1.05.

Explain why the highest temperature is observed in a slightly rich region where the equivalence ratio is not 1.

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