In a closed vessel of 5 litres capacity, 1 g of `O_(2)` is heated from `300` to `600 K`. Which statement is not correct ?

Options

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

C

Explanation

Here, volume is constant and mass of hydrogen gas is also fixed, therefore the number of moles remains same. Now as the temperature increases, then pressure also increases. This will lead to more collisions among the gaseous molecules and hence, the energy of molecules increases.