4.7 - does water result as a gas or vapor in combustion?  [ENDORSED]

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Sue Bin Park 2I
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4.7 - does water result as a gas or vapor in combustion?

Postby Sue Bin Park 2I » Mon Feb 03, 2020 11:24 pm

in part a of the question, the answer key's result requires you to assume that water vapor is produced in the reaction (to get the right delta n of gaseous products). however, in part b to get the provided solution you have to use the enthalpy of formation of liquid water to get the "correct" answer. is this a discrepancy in the book? (i'm going off of the back of the book). or do i not know some convention about combustion rxns?

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Re: 4.7 - does water result as a gas or vapor in combustion?  [ENDORSED]

Postby Chem_Mod » Thu Feb 06, 2020 1:10 pm

Under standard conditions water is a liquid.

Assume standard conditions apply unless the information given states otherwise.


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