contestada

A sample of a gas in a rigid container has an initial pressure of 1.049 kPa and an initial temperature of 7.39 K. The temperature is increased to 30.70 K. What is the new pressure?

Respuesta :

Answer:- 4.36 kPa

Solution:- At constant volume, the pressure of the gas is directly proportional to the kelvin temperature.

[tex]\frac{P_1}{T_1}=\frac{P_2}{T_2}[/tex]

Where the subscripts 1 and 2 are representing initial and final quantities.

From given data:

[tex]P_1[/tex] = 1.049 kPa

[tex]P_2[/tex] = ?

[tex]T_1[/tex] = 7.39 K

[tex]T_2[/tex] = 30.70 K

For final pressure, the equation could also be rearranged as:

[tex]P_2=\frac{P_1T_2}{T_1}[/tex]

Let's plug in the values in it:

[tex]P_2=\frac{1.049kPa(30.70K)}{7.39K}[/tex]

[tex]P_2[/tex] = 4.36 kPa

So, the new pressure of the gas is 4.36 kPa.