Air is filled at 60°C in a vessel of open mouth. The vessel is heated to a temperature T so that (1/4)th … A) 333°C (B) 171°C …
Answers:
The correct option (B) 171°C
Explanation:
For open mouth Vessel, pressure is constant. Volume is also given to be constant PV = nRT
∴ PV = {MRT/Mo}
∴ MT = constant
∴ (T1/T2) = (M2/M1) (1)
As (1/4) th part escapes, mass remained is (3/4) m1 i.e. M2 = (3/4) m1
∴ (T1/T2) = [{(3/4) M1} / M1] = (3 / 4)
also T1 = 60°C = 273 + 60 = 333 K
∴ T2 = (4/3) T1
= (4/3) × 33 = 444 K
∴ T2 = 171°C