Question

In a closed flask of 5 litres, 1.0 g of H₂ is heated from 300 to 600 K. Which statement is not correct?

(a) Pressure of the gas increases

(b) The rate of collision increases

(c) The number of moles of gas increases

(d) The energy of gaseous molecules increases

Answer 1

The correct option is : (c) The number of moles of gas increases

Explanation:

Here volume is constant and mass of H₂ is fixed so the no. of moles of the gas do not change. As temperature increases the pressure also increases. therefore the rate of collision among the gas molecules and their energy also increases.