Question

A gas occupies 22.4L at NTP. Calculate the volume occupied by it at 30 degree Celsius and 665mm pressure.

Answer 1

by gas law this problem gets solved and the approximate value of volume comes to 28.4 ....
THANKS and keep going

Answer 2

Answer: The volume occupied by the gas will be 26.47 L.

Explanation:

To calculate the volume of gas at given temperature and pressure, we use the combined gas law equation, which is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$   (number of moles of gas remains same)

where,

$P_1$ = Pressure of the gas at NTP = 760 mmHg

$P_2$ = Final pressure of the gas = 665 mmHg

$V_1$ = Volume of the gas at NTP = 22.4L

$V_2$ = Final volume of the gas = ?L

$T_1$ = Temperature of the gas at NTP = 293K

$T_2$ = Final temperature of the gas = 30°C = [30 + 273] = 303K

Putting values in above equation, we get:

$\frac{760mmHg\times 22.4L}{293K}=\frac{665mmHg\times V_2}{303K}\\\\V_2=26.47L$

Hence, the volume occupied by the gas will be 26.47 L.