Question

How much heat energy does it take to raise the temperature of 1.5 moles of a crystalline solid by 1.5 K if the volume of the solid remains constant? a. 28.1 J b. 18.73 J c. 37.4 J d. 46.8 J

Answer 1

We require the molar heat capacity at constant volume (Cv) to calculate the heat energy needed to raise the temperature of a crystalline solid. Since the value of Cv for the solid is not provided, we cannot answer the multiple-choice question without additional data or a reference such as Table 5.1 or Table 9.1.

This correct answer is none of the above.

Step-by-step explanation:

To determine the heat energy required to raise the temperature of 1.5 moles of crystalline solid by 1.5 K, we use the formula:

q = n * Cv * ΔT where q is the heat absorbed, n is the number of moles, Cv is the molar heat capacity at constant volume, and ΔT is the change in temperature.

Without the value of Cv, we cannot provide an exact answer, but you can find this kind of information in tables like Table 5.1 or Table 9.1, which list values for specific heats of substances or molar heat capacities.

If we had the Cv value for the solid in question, we would plug it into our formula to find the heat energy needed.

This correct answer is none of the above.