Gases best follow the facts given below A) An ideal gas obeys the mathematical relation PV=nRT B) Rates of diffusion of two gases are in the reciprocal ratio of square roots of their molecular weight C) Total pressure of a mixture of non reacting gases is given by the algebric sum of their partial pressure An ideal gas is captured in a glass tube of uniform arca of cross section by awater column at a given temperature as shown If the tube is held vertical, by what length the water column descends down? (Density of mercury=13.6gm/cc) (P_(atm)=76cm of Hg)

Gases best follow the facts given below A) An ideal gas obeys the mat

1.	Gases best follow the facts given below A) An ideal gas obeys the mathematical relation PV=nRT B) Rates of diffusion of two gases are in the reciprocal ratio of square roots of their molecular weight C) Total pressure of a mixture of non reacting gases is given by the algebric sum of their partial pressure An ideal gas is captured in a glass tube of uniform arca of cross section by awater column at a given temperature as shown If the tube is held vertical, by what length the water column descends down? (Density of mercury=13.6gm/cc) (P_(atm)=76cm of Hg)
Answer» 2.2 cm 3.2 cm 1.03 cm 4.07 cm Solution :Pressure DUE to water column in terms of mercury is given by `h_1d_1 = h_2d_2` `27.2 xx 1 = h_2 xx 13.6 implies h_2 = 2 cm` When HELD vertical , `P_("gas") = P_("atm") + 2 cm of Hg` `= 76+ 2` `= 78 cm of Hg`. `P_1 V_1= P_2V_2 = > 76 xx 40 xx A = 78 xx l xx A` `implies l = 38.97 implies "DESCENT" = 40 - 38.97` `= 1.03 cm`.