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1. |
What is the enthalpy change of a reaction at 45°C, if the enthalpy of reactant at 45°C and 25°C are 10 J and 6 J, and enthalpy of product at 45°C and 25°C are 15 J and 8 J, and the enthalpy change of reaction at 25°C is 10 J? |
A. | 14 J |
B. | 21 J |
C. | 27 J |
D. | 34 J |
Answer» C. 27 J | |