Question

What is the value of gas constant?

(a) 8.314 kJ mol^-1K^-1

(b) 8.314 L atm mol^-1K^-1

(c) 0.0821 L atm mol^-1K^-1

(d) It is equal to the constant in PV/T = constant

I had been asked this question in an interview for internship.

Question is taken from Thermal Properties of Matter in portion Thermal Properties of Matter of Physics – Class 11

Answer 1

Right choice is (c) 0.0821 L atm mol^-1K^-1

Explanation: The value of universal gas constant is 0.0821 L atm mol^-1K^-1.                                                                 Or it is 8.314 J mol^-1K^-1.                                                                                                                                          The constant in PV/T = constant depends on the number of moles taken.