Question

Based on the thermochemical equation below, calculate the heat change when 46.7 g of H2O has...

Based on the thermochemical equation below, calculate the heat change when 46.7 g of H2O has formed.

2 NH3(g) + 5/2 O2(g) --> 2 NO(g) + 3 H2O(g) ∆Ho = -585 kJ/mol rxn

+4554 kJ

-506 kJ

+506 kJ

-1518 kJ

none of the numerical answers are correct
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Answer #1

Option second -506 KJ is correct

Change in the heat of the reaction is -506 KJ

We used simple stoichiometry to calculate change in heat of the reaction.

We have to round off the answer -505.9166 KJ to -506 KJ

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