Question

In: Chemistry

A gas has a volume of 4.00 L at 0 degree Celsius. what final temperature, in...


A gas has a volume of 4.00 L at 0 degree Celsius. what final temperature, in degrees Celsius, is needed to change the volume of the gas to each of the following, if n and P do not change?
(a) 1.50 L
(b) 1200 ml

Solutions

Expert Solution

As per charles law, if pressure is kept constant, temperature is directly proportional to volume.

T1/T2 =V1/V2

T2 = T1v2 / V1   where temperature in kelvin and volume in litres.

1)when V2 = 1.5L,    T2= 273.15 *1.5 / 4

                                        =409.725 /4

                                         =102.43 K       = -170.710C

(0.0k = -273.150C    , 00C = 273.15K)

temperature in celsius = temperature in kelvin - 273.15

Tc =102.43 - 273.15 = -170.710C

2) when v=1200ml = 1.2 litres

T2 =273.15 *1.2 /4 =327.78/4

          =81.945K

Tc = 81.945 -273.15 = -191.2050C


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