A gas occupies a volume of 444 mL at 273 K and 79.0 kPa. What is the final kelvin temperature when the volume of the gas is changed to 1880 mL and the pressure is changed to 38.7 kPa

Respuesta :

Answer:

Therefore,

The final kelvin temperature when the volume of the gas is changed is

[tex]T_{2}=566\ K[/tex]

Explanation:

Given:

[tex]V_{1}=444\ ml\\T_{1}=273\ K\\P_{1}=79\ kPa[/tex]

[tex]V_{2}=1880\ ml\\P_{2}=38.7\ kPa[/tex]

To Find:

[tex]T_{2}=?[/tex]

Solution:

Combined Gas Law:

The combined gas law combines the three gas laws:

Boyle's Law, Charles' Law, and Gay-Lussac's Law.

It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant.

Hence,

[tex]\dfrac{P_{1}V_{1}}{T_{1}}=\dfrac{P_{2}V_{2}}{T_{2}}[/tex]

Substituting the values we get

[tex]T_{2}=\dfrac{P_{2}V_{2}T_{1}}{P_{1}V_{1}}[/tex]

[tex]T_{2}=\dfrac{38.7\times 1880\times 273}{79\times 444}=566.26\approx 566\ K[/tex]

Therefore,

The final kelvin temperature when the volume of the gas is changed is

[tex]T_{2}=566\ K[/tex]