Question

At what temperature in degree centigrade will the
volume of a gas, which is originally at 0°C,
double itself, pressure remaining constant.​

Answer 1

Explanation:

Assuming an ideal gas, the state equation is

PV = nRT .

At constant pressure P and fixed number of moles n, Volume V grows proportionally to temperature T. (R is a universal constant.)

Thus, volume doubles when temperature doubles. At 0°C, the absolute temperature is T = 273.15 K. The double of that is 546.30 K = +273.15°C.