Answer to Question #140227 in Inorganic Chemistry for Christine

Question #140227
5. When one mole of calcium carbonate reacts with ammonia, solid calcium cyanamide, CaCN2, and liquid water are formed. The reaction absorbs 90.1 KJ of heat.
a. Write a balanced thermochemical equation for the reaction.
b. Using Table 8.3, calculate ∆Hof for calcium cyanamide.
1
Expert's answer
2020-10-26T14:52:51-0400

When 1 mole of calcium carbonate reacts with ammonia to form calcium cyanamide and liquid water 90.1 kJ of heat is absorbed.

The thermochemical equation for the reaction is as follows:

A).

CaCo3(s) + 2 NH3(g) - CaCN2(S) + 3H2O(l)


ΔHfO = +90.1KJ





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