Question

The volume of a given mass ofgas is 300cm cube of 27degree celcius and 700mmHg. What will be it volume of 36degree celcius and 750mmHg

Answer 1

Temperatures in Kelvins:

27^oC = 273 + 27 = 300 K

36^oC = 273 + 36 = 309 K

According to the combined gas law,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

Therefore,

$V_2=\frac{P_1V_1T_2}{T_1P_2}=\frac{700\ mmHg\times300\ cm^3\times309\ K}{300\ K\times750\ mmHg}=288\ cm^3$

Answer: 288 cm³