60 mL of a mixture of CO and `H_(2)`, mixed with 40 mL of `O_(2)`, are subjected to explosion in a eudiometer tube. On cooling the gas mixture after the end of the reaction, the volume is reduced to 30 mL. determine the compostion of the gas mixture initially taken. [All volumes are measured at the same temperature and pressure].

9.0 mL of a mixture of CH_4 and C_2H_4 is mixed with 30.0 mL of O_2 and the mixture is exploded in an eudiometer tube. On cooling, the resulting gas mixture occupy a volume of 21.0 mL. on shaking the residual gas with KOH, the volume becomes 7.0 mL. Find the volumes of CH_4 and C_2H_4 in the mixture (All volumes are measured at the same temperature and pressure)

The volume of the gas mixture obtained by passing 400 mL CO_(2) over red hot coke was measured to be 600 mL. find the compo-sition of the gas mixture.

20cm^(3) of a hydrocarbon mixed with 66cm^(3) of oxygen is exploded. After cooling the gaseous mixture, the volume becomes 56cm^(3) . The volume of this mixture when shaken with KOH solution reduces to 16cm^(3) . Determine the formula of the hydrocarbon. [all volumes are measured at the same temperature and pressure].

25 mL of a mixture containing nitrogenn and nitric oxide is passed over heated copper. The volume of gaseous mixture becomes 20 mL. what is the percentage composition of the original mixture. [all volumes are measrued at the same temperature].

2 volumes of O_(3) produce 3 volumes of O_(2) on complete decomposition. 40 mL of a mixture of O_(3) and O_(2) is heated at first and then brought back to the previous temperature and pressure. The volume of the gaseous mixture is now found to be 42 mL. find the percentage composition of O_(3) in the gas mixture by volume. the volume of all gases are measured under the same conditions of temperature and pressure.

30 mL of a mixture of CO and CO_(2) , mixed with 10 mL of oxygen, was exploded by electric spark. The gas mixture produced was mixed with KOH solution and thoroughly shaken. 5 mL of oxygen was left behind. What was the composition of the original mixture [volume was measured at STP].

Calculate the volume of O_(2) gas requried for complete burning of 10 L of acetylene gas. Also calculate the volume of CO_(2) produced. All volumes are measured at same temperature and pressure.

20cm^(3) of gaseous hydrocarbon mixed with excess of oxygen is exploded. A contraction in the volume of 30cm^(3) takes place. On treating the produces gaseous mixture with KOH solution, it sufffers a further contraction of 40 cm^(3) . Determine the molecular formula of the hydrocarbon. [all volumes are measured at the same temperature and pressure].

When 100 mL of ozonised oxygen is shaken with turpentine oil, volume decreases by 20 mL. when 100 mL of the same sample is heated, the mixture occupies a volume of 110 mL. determine the molecular formula of ozone. [All volumes are measured under same temperature and pressure.]

10 mL of a mixture of CH_(4),C_(2)H_(4) and CO_(2) was exploded with excess oxygen. After explosion, there ws a contraction of 17 mL on cooling and there was a further contraction of 14 mL on treatment with KOH. Find out the composition of the mixture.