Advertisements
Advertisements
प्रश्न
The following experiment was performed in order to determine the formula of a hydrocarbon. The hydrocarbon X is purified by fractional distillation.
0.145 g of X was heated with dry copper (II) oxide and 224 cm3 of carbon dioxide was collected at STP.
What was the purpose of Copper (II) oxide?
उत्तर
Copper (II) oxide was used to oxidise the given hydrocarbon.
संबंधित प्रश्न
If 6 liters of hydrogen and 4 liters of chlorine are mixed and exploded and if water is added to the gases formed, find the volume of the residual gas.
Determine the molecular mass of a gas if 5g of it occupy a volume of 4 L at STP.
Calculate the volume of air at STP, required to convert 300 mL of sulphur dioxide to sulphur trioxide. Air contains 21% of oxygen by volume.
A flask contains 3.2g of sulphur dioxide. Calculate the following : The volume occupied by 3.2g of sulphur dioxide at STP.
A gas of 32 g mass has a volume of 20 litres at STP. Calculate the gram molecular weight of the gas.
Give a chemical test to distinguish between the following pair of compounds:
Carbon dioxide gas and sulphur dioxide gas
What do you mean by stoichiometry?
How much calcium oxide is obtained by heating 82 g of calcium nitrate? Also, find the volume of NO2 evolved:
\[\ce{2Ca(NO3)2 ->2CaO + 4NO2 + O2}\]
800 cm3 of gas is collected at 650 mm pressure. At what pressure would the volume of the gas reduce by 40% of its original volume, the temperature remaining constant?
A cylinder of 20 liters capacity contains gas at 100 atmospheric pressure. How many flasks of 200 cm3capacity can be filled from it at 1-atmosphere pressure, temperature remaining constant?