The volume of a sample gas, initially at 25 C and 158 mL, increased to 450 mL. What is the final temperature of the sample of gas, if the pressure in the container it kept constant?

Respuesta :

Answer:

Final temperature of the gas is  576 [tex]^{0}\textrm{C}[/tex].

Explanation:

As the amount of gas and pressure of the gas remains constant therefore in accordance with Charles's law:

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

where [tex]V_{1}[/tex] and [tex]V_{2}[/tex] are volume of gas at [tex]T_{1}[/tex] and [tex]T_{2}[/tex] temperature (in kelvin scale) respectively.

Here [tex]V_{1}=158mL[/tex] , [tex]T_{1}=(273+25)K=298K[/tex] and [tex]V_{2}=450mL[/tex]

So  [tex]T_{2}=\frac{V_{2}T_{1}}{V_{1}}=\frac{(450mL)\times (298K)}{(158mL)}=849K[/tex] 

849 K = (849-273) [tex]^{0}\textrm{C}[/tex] = 576 [tex]^{0}\textrm{C}[/tex]

So final temperature of the gas is  576 [tex]^{0}\textrm{C}[/tex].