Three flasks of equal volumes contain CH 4 , CO 2 & Cl 2 gases respectively. They will contain equal…

Three flasks of equal volumes contain CH4,CO2&Cl2 gases respectively. They will contain equal number of molecules if
  1. The mass of all the gases is same
  2. The mass of all the gases is same but Temperature is different
  3. Temperature & Pressure of all the flasks are same
  4. Temperature, Pressure & Masses same in the flasks

Solution

According to the ideal gas equation,

The number of molecules is equal when the number of moles are equal. 

Ideal gas equation is PV=nRT

If volume is equal then the temperature and pressure also equal for the equal number of moles. Hence, they will contain equal number of molecules if temperature & Pressure of all the flasks are same.

Asked in: AP EAMCET 2021 (20 Aug Shift 2)

Practice more States of Matter questions on Aicharya