A gas occupies 560 cm3 at S.T.P. Find its volume when:
The pressure is 700 mm of mercury and the temperature is 27° C.
Step-1: Analyse the given values
Step-2: Perform the unit conversion from degree Celsius to Kelvin
Step-3: Use the ideal gas equation
Ideal gas equation: Ideal gas equation correlates all the variables the pressure and temperature with the volume of the gas.
Mathematically,
……….(i)
where P1, V1 and T1 are the pressure, volume and temperature at STP i.e.;
where P2, V2 and T2 are the pressure, volume and temperature at final conditions i.e.;
Step-4: Substitute the values in the ideal gas equation
Substituting the values above in the equation (i)