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Use the Standard Reaction Enthalpies Given Below to Determine DrD _ { \mathrm { r } }

Question 62

Multiple Choice

Use the standard reaction enthalpies given below to determine DrD _ { \mathrm { r } } H° for the following reaction: 2NO(g) + O2(g) ? 2NO2(g) DrH°= ?
Given:
N2(g) + O2(g) ? 2NO(g) DrH°= +183 kJ
1/2 N2(g) + O2(g) ? NO2(g) DrH°= +33 kJ


A) -150.kJ mol-1
B) -117 kJ mol-1
C) -333 kJ mol-1
D) +115 kJ mol-1
E) +238 kJ mol-1

Correct Answer:

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