Question

Which equation agrees with the ideal gas law?

Answer 1

Answer : $P_{1}V_{1}/T_{1} = P_{2}V_{2}/T_{2}$

Explanation : The ideal gas law, states that PV = nRT;

where, P is pressure;

V is volume;

n is number of moles

R is gas constant

T is temperature

If there are two entities to be compared then, it can be compared as,

$P_{1}V_{1}/T_{1} = P_{2}V_{2}/T_{2}$;

as n and R can be considered as a constant.

Therefore, at constant pressure, the equation will get modified as;

$V_{1}/T_{1} = V_{2}/T_{2}$

Answer 2

Explanation:

Ideal gas law states that product of pressure and volume is directly proportional to the product of number of moles and temperature.

Mathematically,      $PV \propto nT$

or,                                PV = nRT

where        P = pressure

                  V = volume

                  n = number of moles

                   R = gas constant

                   T = temperature

Also, when there are two entries for pressure, volume and temperature then the ideal gas law equation will be as follows.

           $\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}$