Question

When 0.112 g of heptene, C7H14, is burned in a bomb calorimeter, the temperature rises by 4.99 °C. What is the heat capacity of the calorimeter?

a) 2.46 kJ/°C
b) 0.022 kJ/°C
c) 0.499 kJ/°C
d) 22.210 kJ/°C

Answer 1

The heat capacity of the calorimeter requires the total heat released during combustion, but this information is not given for heptene. Therefore, we cannot accurately determine the heat capacity without making assumptions.

Step-by-step explanation:

To calculate the heat capacity of the calorimeter, we can use the formula q = C × ΔT, where q is the heat absorbed or released, C is the heat capacity, and ΔT is the change in temperature. The amount of heat released when the heptene is burned is proportional to the change in temperature of the calorimeter.

Using the details from the reference material provided, we can establish an analogy. For example, when 3.12 g of glucose is combusted, 48.7 kJ of heat are produced. This might suggest that the burning of glucose can be related to the burning of heptene as both involve combustion in a calorimeter. However, we first need to calculate the total heat q released by the heptene's combustion and only then, we can solve for the calorimeter's heat capacity C.

Since we are not given q for the combustion of heptene directly, and since it is needed to find C, we cannot proceed without it. Without additional information regarding the enthalpy of combustion for heptene, we must refuse to answer. This is because we cannot accurately determine the heat capacity of the calorimeter without making assumptions.