Which of the following concerning the ideal gas law is/are true? 1) Pressure is

Question

Which of the following concerning the ideal gas law is/are true?
1) Pressure is directly proportional to volume when temperature and moles of gas are held constant
2) Pressure is directly proportional to moles of gas when temperature and volume are held constant
3) Volume is inversely proportional to temperature when the pressure and moles of gas are held constant

A) 1 only
B) 2 only
C) 3 only
D) 1 and 2 only
E) 2 and 3 only

Please consider carefully and provide reasoning for each true statement or each falsity. My mentor (PhD in Chem) was unable to provide certainty in his discussion of some of these statement questions, so I'm seeking other evaluations :)

Explanation / Answer

2) Pressure is directly proportional to moles of gas when temperature and volume are held constant

B) 2 only.

PV = nRT

P varies as T

P aries as n

P aries as (1/V)

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