A Common Laboratory Reaction Is the Neutralization of an Acid

question 16

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°C is added to 50.0 mL of 0.500 M NaOH at 25.0°C in a coffee cup calorimeter, the temperature of the mixture rises to 28.2°C. What is the heat of reaction per mole of acid? Assume the mixture has a specific heat capacity of 4.18 J/g·°C 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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Definitions:

Variable-Ratio

A reinforcement schedule where a response is rewarded after an unpredictable number of responses, enhancing the response rate.

Compound

A substance made up of two or more elements chemically bonded together, characterized by having properties distinct from its component elements.

DRO

Differential Reinforcement of Other behavior, a technique used in behavior therapy where reinforcement is given for any response other than a targeted undesired behavior.

Contingency Reinforcement Schedule

A plan or method in operant conditioning by which a certain behavior is reinforced based on meeting specific conditions or criteria.