Question

combustion of 1 g of benzoic acid releases 26.42 kj. which of the following represents the heat capacity of the calorimeter if the temperature rise is 4.674°c?

565.2kj/°c

56.52kj/°c

5652kj/°c

5.652kj/°c

Explanation:

Step1: Calculate total heat released

Heat released by \(1\) g benzoic acid is \(26.42\) kJ.

Step2: Use formula \(C=\frac{q}{\Delta T}\)

Here \(q = 26.42\) kJ (heat released), \(\Delta T=4.674^{\circ}C\) (temperature rise).

$$C=\frac{26.42}{4.674}$$

$$C = 5.652\space kJ/^{\circ}C$$

Answer:

\(5.652\space kJ/^{\circ}C\) (the fourth option)