11.
A flask containing SO2 gas was weighed at a particular temperature and pressure . The flask was then flushed and filled with oxygen gas at the same temperature and pressure.
The weight of SO2 in the flask Will be about
(A) Same as that Of oxygen
(B) One fourth that of oxygen
(C) Four time that of oxygen
(D) Twice that of oxygen
Dear student,
As given in the question that two gases are taken at same temperature and pressure and since they are taken in same flask therefore their volumes are also same then according to Avogadro's law " Under the similar condition of temperature , pressure and volume the two gases must have same number of moles also".
Then ; n(SO2) = n (O2 )
or
And the molecular mass of SO2 = 64 gm/mol and O2 = 32 gm /mol
Then ; w( SO2) / 64 = w (O2) / 32
w (SO2) = 2 w (O2 ) (option D)
Regards
As given in the question that two gases are taken at same temperature and pressure and since they are taken in same flask therefore their volumes are also same then according to Avogadro's law " Under the similar condition of temperature , pressure and volume the two gases must have same number of moles also".
Then ; n(SO2) = n (O2 )
or
And the molecular mass of SO2 = 64 gm/mol and O2 = 32 gm /mol
Then ; w( SO2) / 64 = w (O2) / 32
w (SO2) = 2 w (O2 ) (option D)
Regards