Question

A gas at 20 °C is heated at constant volume till its pressure is tripled.Find its final temperature.​

Answer 1

Answer:

T (final) = 879 K = 606 C

Explanation:

Assume this gas is an ideal gas its relation = PV=nRT

- P :   the absolute pressure

- V :   the volume

- n : no. of moles

-  R :  the specific gas constant (universal gas constant/molecular weight of the gas we’re using)

-  T :   the absolute pressure in Kelvin

Since, V is constant that means (nRT/P )  initial   = (nRT/P )  final

which reduces to (T/P) initial  = (T/P) finial by cancelling R & n which are constants. n is constant because V is constant

T (initial ) = 20+273 = 293 K              P (finial ) = 3 P(initial )

Therefore T ( final ) = 879 K = 606 C