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vodka [1.7K]
3 years ago
9

When the pressure that a gas exerts on a sealed container changes from 53.0 Bar to 35.2 Bar, the temperature changes from _____

C to 12.0 C. Use P1/T1=P2/T2

Advanced Placement (AP)
1 answer:
viktelen [127]3 years ago
4 0

Answer:

156.1^{\circ}C

Explanation:

We can solve the problem by using Gay-Lussac's law, which states that:

"For a fixed mass of ideal gas kept at constant volume, the pressure of the gas is directly proportional to its absolute temperature"

Mathematically:

\frac{p}{T}=const.

where

p is the pressure

T is the absolute temperature

The equation can be also rewritten as

\frac{p_1}{T_1}=\frac{p_2}{T_2}

where, in this problem:

p_1 = 53.0 Bar is the initial pressure

p_2=35.2 Bar is the final pressure

T_2=12.0^{\circ}+273=285 K is the final temperature

Solving for T1, we find the initial temperature:

T_1=\frac{p_1 T_2}{p_2}=\frac{(53.0)(285)}{35.2}=429.1 K

Converted into Celsius degrees,

T_2=429.1-273=156.1^{\circ}C

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