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Which graph shows the relationship between pressure and Kelvin temperature for an ideal gas at const

June 2017 NY Regents Chemistry Exam


50 Which graph shows the relationship between pressure and Kelvin temperature for an ideal gas at constant volume?



Solution: Pressure and temperature are directly proportional. We know this from the ideal gas law PV=nRT. If two terms (such as P and V) are on the same side, they are inversely proportional. If two terms are on opposite sides such as P and T, they are directly proportional. Directly proportional means that as the temperature increases, pressure increases as well.

Answer: 1


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