A Common Laboratory Reaction Is the Neutralization of an Acid

question 20

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·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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Definitions:

Random Assignment

A method used in experiments to allocate participants to different groups using randomization, ensuring each participant has an equal chance of being placed in any group.

Random Sampling

A method of selecting a sample from a population where each member has an equal chance of being chosen.

Gender Similarities

The perspective that emphasizes the similarities rather than differences between genders in various psychological traits and behaviors.

Psychological Differences

Variations in mental processes or behaviors among individuals due to various factors such as genetics, environment, or experiences.