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3.5k views
in Chemistry by (26.1k points)

The reaction of cyanamide, NH2CN(s) with oxygen was run in a bomb calorimeter and ΔU was found to be –742.24 kJ mol–1. The magnitude of ΔH298 for the reaction

is ...... kJ. (Rounded off to the nearest integer) [Assume ideal gases and R = 8.314 J mol–1 K–1]

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1 Answer

+1 vote
by (26.7k points)

ΔH = ΔU + ΔNgRT

= -742.24 + \(\frac{1}{2}\times\frac{8.314}{1000}\times298\)

= - 741 kJ/mol

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