A multiple choice question. Pick one of the answers below. Explain. 7. A glass v

Question

A multiple choice question. Pick one of the answers below. Explain.

7. A glass vessel (rigid, but limited in the pressure of gas it can hold) contains 28 g nitrogen gas. Assuming ideal gas behavior, circle the letter(s) of the process(es) listed below that would double the pressure exerted on the walls of the vessel. Question to consider: Can this be solved for qualitatively using the ''initial-final'' containing version of the ideal gas law? (a) Adding enough Hg(l) at the same temperature of the nitrogen to fill one half the container. (b) Raising the temperature of the container from 30.0 degree C to 600 degree C (c) Raising the temperature of the container from -73 degree C to 127 degree C (d) Adding 28 g nitrogen gas at the same temperature.

Explanation / Answer

WE know that ideal gas equation is PV = nRT

Where P - Pressure ; V - Volume ; n = no.of moles ; R - gas constant ; T - temperature in kelvin

In the equation P is directly proportional to T , so upon doubling the temperature doubles the pressure of the gas.

IN the option (c)

                     initial temperature is = -73 oC = -73 + 273 = 200 K

                     final temperature is = 127 oC = 127 + 273 = 400 K

so temperature is doubled , so pressure will also doubles.

Therefore option (c) is correct

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