KCET2022ChemistryStates of Matter
The volume of 2.8 ~g of CO at 27^ C and 0.821 atm pressure is (R=0.08210 L. atm K ⁻¹ ~mol ⁻¹ )
Options
- A1.5 litres
- B3 litres
- C30 litres
- D0.3 litres
Correct answer
B. 3 litres
Step-by-step solution
Given, amount of CO =2.8 ~g Temperature =27^ C Pressure =0.821 ~atm R=0.08210 ~L ~atm ~K ⁻¹ ~mol ⁻¹ We know that, p V=R T V= R T p = 0.0821 300 0.821 =30 ~L 28 ~g of CO occupy volume 30 ~L 2.8 ~g of CO occupy volume = 30 2.8 28 =3 ~L