question_answer

In an experiment 4.5 kg of a fuel was completely burnt. The heat produced was measured to be 180,000 kJ. Calculate the calorific value of the fuel.

Answer:

The calorific value of fuel is the amount of heat produced by the complete combustion of 1 kg of fuel. Now, Heat produced by 4.5 kg of fuel = 180000 kJ Therefore, heat produced by 1kg of fuel \[=\frac{180000}{4.5}\times 1\text{ }kJ/kg=40,000\text{ }kJ/kg\] Hence, the calorific value of the fuel is 40,000 kJ/ kg.