For a fixed amount of gas, if the absolute temperature of the gas is doubled, wh

Question

For a fixed amount of gas, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas? (A) The pressure of the gas becomes one half the original pressure. (B) The pressure of the gas becomes four times the original pressure. (C) The pressure of the gas becomes double the original pressure. (D) The answer cannot be determined without volume information. (E) The pressure of the gas becomes eight times the original pressure. Does a fixed amount of gas mean constant volume also? or just constant moles?

Explanation / Answer

(D) The answer cannot be determined without volume information.

as (P/T )= nR/V   and for constant n , P/T is a function of V

fixed amount of gas ==> n is constant (amount of matter)

you can also consider as mass of the gas: it basically implies we are considering a closed system

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