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1. |
Which one of the following statements best describes the enthalpy change of a reaction? |
A. | The energy released when chemical bonds are formed during a chemical reaction |
B. | The energy consumed when chemical bonds are broken during a chemical reaction |
C. | The difference between the energy released by bond formation and the energy consumed by bond cleavage during a chemical reaction |
D. | The increase in disorder of the system as a reaction proceeds |
Answer» D. The increase in disorder of the system as a reaction proceeds | |