When a Student Performs an Endothermic Reaction in a Calorimeter

question 35

Multiple Choice

When a student performs an endothermic reaction in a calorimeter, how (if any) does the calculated value of H differ from the actual value if the heat exchanged with the calorimeter is not taken into account?

• A) (  H_calc) is less positive because the reaction absorbs heat from the calorimeter.
• B) (  H_calc) equals the actual value because the calorimeter does not absorb heat.
• C) (  H_calc) is more negative because the calorimeter always absorbs heat from the reaction.
• D) (  H_calc) is less negative because the calorimeter absorbs heat from the reaction.
• E) (  H_calc) is more positive because the reaction absorbs heat from the calorimeter.

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