A Common Laboratory Reaction Is the Neutralization of an Acid $\degree$

question 22

Multiple Choice

A common laboratory reaction is the neutralization of an acid with a base. When 50.0 mL of 0.500 M HCl at 25.0 $\degree$ C is added to 50.0 mL of 0.500 M NaOH at 25.0 $\degree$ C in a coffee cup calorimeter, the temperature of the mixture rises to 28.2 $\degree$ C. What is the heat of reaction per mole of acid? Assume the mixture has a specific heat capacity of 4.18 J/(g ? K) and that the densities of the reactant solutions are both 1.00 g/mL.

• A) 670 J
• B) 1300 J
• C) 27 kJ
• D) 54 kJ
• E) > 100 kJ

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