When a Cold-Pack Is Activated,a Chemical Reaction Occurs and the Temperature

question 62

Multiple Choice

When a cold-pack is activated,a chemical reaction occurs and the temperature of the pack contents drops sharply.Which of the following is a correct description of the reaction occurring in the pack?

• A)The reaction is exothermic; ∆H ° > 0.
• B)The reaction is exothermic; ∆H ° < 0.
• C)The reaction is endothermic; ∆H ° > 0.
• D)The reaction is endothermic; ∆H ° < 0.
• E)None of the choices are correct.

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