Question

At what temperature the volume of V of a certain mass of gas at 37 degree centigrade will be doubled keeping the pressure constant

Answer 1

As we know that P V = n R T

as P is constant......so,

V is directly proportional to T.

After doubling new volume will be 2V

let the new temperature be T'

As PV = nRT

or, T = PV/nR.............1

P(2V) = nRT'..............2

so, T' = 2PV/nR

so, T' = 2T .........{from 1}

As T = 37℃ = 273+37 = 310 K

so, T' = 2×310 = 620 K

= 620-273

= 347℃ or 620 K.

Answer 2

T=2T. 37c=300k 300*2=600 600-273k=347c