A gaseous mixture of propane and butane of volume 3 litre on complete combustion produces `11.0` litre `CO_2` under standard conditions of temperature and pressure. The ratio of volume of butane to propane is :

11.6g of an organic compound having formula C_n H_(2n+2) is burnt in excess of O_2(g) initially taken in a 22.41 litre steel vessel. Before reactio0n the gaseous mixture was at 273K with pressure reading 2 atm. Aftercomplete combustion and loss of considerable amount of heat, the mixture of product and excess of O_2 had a temperature of 546K and 4.6 atm pressure. The formula of organic compound is :

Molar volume is the volume occupied by 1 mol of any (ideal) gas at standard temperature and pressure (STP : 1 atmospheric pressure, 0^@C ). Show that it is 22.4 litres.

Calculate the ratio of the mean free paths of the molecules of two gases having molecular diameters 1 and 2. The gases may be considered under identical conditions of temperature, pressure and volume.

20mL of a mixture of CO and H_(2) were mixed excess of O_(2) and exploded & cooled. There was a volume contraction of 18mL. All volume measurements corresponds to room temperature (27^(@)C) and one atmospheric pressure. Determine the volume ratio (V_(1):V_(2) "of" Co anf H_(2) in the original mixture .

1 mole of a diatomic gas present in 10 L vessel at certain temperature exert a pressure of 0.96 atm. Under similar conditions an ideal gas exerted 1.0 atm pressure. If volume of gas molecule is negligible, then find the value of van der Waals' constant ''a'' (in atm L^(2)//mol^(2) ).

10 litre of a non linear polyatomic ideal gas at 127^(@)C and 2 atm pressure is suddenly released to 1 atm pressure and the gas expanded adiabatically against constant external pressure. The final temperature and volume of the gas respectively are.

A certain sample of gas has a volume of 0.2 litre measured at 1 atm pressure and 0^(@)C . At the same pressure but at 273^(@)C , its volume will be

An oxygen cylinder of volume 30 litres has an initial gauge pressure of 15 atm and a temperature of 27 ^@C . After some oxygen is withdrawn from the cylinder, the gauge pressure drops to 11 atm and its temperature drops to 17 ^@C . Estimate the mass of oxygen taken out of the cylinder ( R= 8.31 J mol^-1 K^-1 ’, molecular mass of O_2 = 32 u)

The reaction ,Sucrose overset(H^(+))rarr Glucose + Fructose, take place at certain temperature while the volume of solution is maintained at 1 litre. At time zero the initial rotation of the mixture is 34^(@) . After 30 minutes the total rotation of solutions is 19^(@) and after a very long time, the total roation is -11^(@) C Find the time when solution was optically inaactive.