In an experiment to estimate the enthalpy change of a reaction, a student makes two aqueous solutions, each containing one of the reactants. The student combines the solutions, both originally at the same temperature, in a calorimeter and records the final temperature of the mixture. In addition to the masses of the solutions and the temperature change of the mixture, which of the following pieces of information does the student need to calculate the enthalpy change of the reaction? why?
A) The boiling point of the reaction mixture
B) The heat of fusion of the reaction mixture
C) The density of the reaction mixture
D) The specific heat capacity of the reaction mixture

Question

22-02-2022
Chemistry

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In an experiment to estimate the enthalpy change of a reaction, a student makes two aqueous solutions, each containing one of the reactants. The student combines the solutions, both originally at the same temperature, in a calorimeter and records the final temperature of the mixture. In addition to the masses of the solutions and the temperature change of the mixture, which of the following pieces of information does the student need to calculate the enthalpy change of the reaction? why?
A) The boiling point of the reaction mixture
B) The heat of fusion of the reaction mixture
C) The density of the reaction mixture
D) The specific heat capacity of the reaction mixture

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mickymike92 mickymike92 · Answer 1 · 2022-03-01T13:35:07+01:00

Based on the formula for calculating quantity of Heat, the student requires the mass, temperature change and the specific heat capacity of the reaction mixture.

What is enthalpy change of a reaction?

The enthalpy change of a reaction is the amount of heat evolved or absorbed when reactant molecules react to form products.

In the use of a calorimetry to determine the enthalpy of a reaction, the law of conservation of energy is applied.

Heat lost = Heat gained

The quantity of Heat is calculated using the formula below:

Quantity of Heat = mass × specific heat capacity × temperature cahange

Therefore, in addition to the masses of the solutions and the temperature change, the student requires the specific heat capacity of the reaction mixture.

Learn more about enthalpy change at: https://brainly.com/question/14291557