7
QuizMultiple Choice

The Ideal Gas Law — Quiz

Question 7 • Chemistry

Which law relates to the ideal gas law?

Answer
A
the fraction with numerator cap p sub 1 and denominator cap v sub 1 is equal to the fraction with numerator cap p sub 2 and denominator cap v sub 2
B
the fraction with numerator cap v sub 1 and denominator n sub 1 is equal to the fraction with numerator cap v sub 2 and denominator n sub 2
C
cap p sub 1 cap t sub 1 is equal to cap p sub 2 cap t sub 2
D
cap p sub 1 n sub 1 is equal to cap p sub 2 n sub 2

Explanation

The ideal gas law is PV = nRT. If pressure and temperature stay constant, volume is proportional to the amount of gas, so V/n remains constant: V₁/n₁ = V₂/n₂. This is Avogadro’s law, represented by choice C.

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