If the temperature of a 1.75 liter sample of gas is changed from 30.0°C to 20.0°C at constant pressure,what will be the new volume?

Question

Quizplus · Accepted Answer

Using Charles's Law, we know that the volume of a gas is directly proportional to its temperature in Kelvin. We can convert the initial temperature of 30.0°C to Kelvin by adding 273.15:

Initial temperature: 30.0°C = 303.15 K 
Final temperature: 20.0°C = 293.15 K

Next, we can set up a proportion to find the new volume:

Initial volume / Initial temperature = Final volume / Final temperature

1.75 L / 303.15 K = Final volume / 293.15 K

Solving for Final volume:

Final volume = (1.75 L x 293.15 K) / 303.15 K = 1.69 L

Therefore, the new volume of the gas is 1.69 L. The correct answer is choice C.

If the Temperature of a 1