At constant pressure, 492 mL of a gas at 31.00C is heated and the volume expands to 876mL. What is the new temperature in Kelvin?
A) 171 K
B) 291 K
C) 328 K
D) 541 K

Respuesta :

The answer should be B........

Answer: Option (D) is the correct answer.

Explanation:

It is given that pressure is constant and the given data is as follows.

         [tex]V_{1}[/tex] = 492 mL,            [tex]T_{1}[/tex] = 31 + 273 = 304 K

         [tex]V_{2}[/tex] = 876 mL,           [tex]T_{2}[/tex] = ?

Therefore, calculate the temperature [tex]T_{2}[/tex] as follows.

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

Since pressure is constant so, value of P = 1.

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

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

                         = [tex]\frac{876 mL \times 304 K}{492 mL}[/tex]

                         = 541.268 K

                         = 541 K (approx)

Thus, we can conclude that value of [tex]T_{2}[/tex] is 541 K.