Question

Details of some gases taken at $273K$ temperature and $1$ atm pressure are given in the table.

Gas	Volume (L)	Number of moles
Hydrogen	224	10
Helium	112	5
Oxygen	224	10
Ammonia	56	2.5

(a) On the basis of which gas law, the volume and the number of moles are given in the table?
(b) Represent this gas law in mathematical form.
(c) Among these, if the pressure of hydrogen gas is changed to $2$ atm. Calculate the new volume.

Answer 1

(a) Avogadro's law
(b) $V\propto n(PT$ constant)
(c) $V_1=224L,P_1=1atm,P_2=2atm,V_2=$?
$P_1{V}_1=P_2{V}_2$ or $V_2=P_1{V}_1/P_2$
$=\frac{1atm\times 224L}{2atm}=112L$