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Predict the sign of delta H for a combustion reaction and suggest whether it is likely to be spontaneous or not.

A) + and spontaneous
B) + and uncertain
C) - and spontaneous
D) - and uncertain

Sagot :

What's a combustion

It means hydrocarbon burns in presence of excess oxygen to produce carbon dioxide and heat

  • Hence it's exothermic
  • ∆H=+ve

As solid state is converted to gaseous so randomness increases hence it's spontaneous

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