Question

What units of measurement are used for the combined gas law?

Answer 1

Hint: As we know that units of measurement play an important part in physical chemistry and its calculation as well. So here we have to write down the units of measurements used for combined gas law which is the combination of Charles’s law, Boyle’s law and Gay Lussac’s law.

Complete answer:
Let us first discuss about combined gaseous law followed by the units of measurements which are used in it as follows:-
Combined gas law: It is the combination of three gaseous laws which are: Charles’s law, Boyle’s law and Gay Lussac’s law. This law states that for a sample of gas, the ratio of the product of original pressure and volume to the original temperature will be equal to the ratio of the product of new pressure and volume to the new temperature. Mathematically it can be represented as follows:-
$\dfrac{{{P}_{1}}\times {{V}_{1}}}{{{T}_{1}}}=\dfrac{{{P}_{2}}\times {{V}_{2}}}{{{T}_{2}}}$
where,
P = pressure of the gas
V = volume of the gas
T = temperature of the gas
Units of measurements used for the following terms are as follows:-
P = Pressure of the gas can be measured in terms of atm, Pascal, KPa, mm Hg, mm ${{H}_{2}}O$, etc.
V = Volume of the gas can be measured in terms of litres, ${{m}^{3}}$, $c{{m}^{3}}$, etc.
T = Temperature of the gas can be measured in terms of Celsius, Fahrenheit, Kelvin.

Note:
-Remember that while solving the questions; make sure to convert all the units in the SI system or cgs system so as to obtain an accurate answer with minimum errors. So we can say that homogeneity in units is required to be made.