Advertisements
Advertisements
Question
The reaction between the red lead and hydrochloric acid is given below:
\[\ce{Pb3O4 + 8HCl -> 3PbCl2 + 4H2O + Cl2}\]
Calculate the volume of the chlorine evolved at S.T.P.
Solution
1 V Pb3O4 produces 1 V Cl2
685g of Pb3O4has volume = 22.4 litres = volume of Cl2 produced
So, 6.85 Pb3O4 will produce = `(6.85 xx 22.4)/685` = 0.224 litres
APPEARS IN
RELATED QUESTIONS
Oxygen oxidises ethyne to carbon dioxide and water as shown by the equation:
\[\ce{2C2H2 + 5O2 -> 4CO2 + 2H2O}\]
What volume of ethyne gas at STP required to produce 8.4 dm3 of carbon dioxide at STP?
[H = 1, C = 12, O = 16]
If the hydrogen sample contains N molecules, how many molecules are present in oxygen sample?
The equation for the burning of octane is:
\[\ce{2C8H18 + 25O2 -> 16CO2 + 18H2O}\]
What volume, at STP, is occupied by 8 moles?
How much calcium oxide is formed when 82g of calcium nitrate is heated? Also find the volume of nitrogen dioxide evolved:
2Ca(NO3)2→ 2CaO + 4NO2 + O2 (Ca = 40,N = 14, O = 16)
The reaction between 15 g of marble and nitric acid is given by the following equation:
\[\ce{CaCO3 + 2HNO3 -> Ca(NO3)2 + H2O + CO2}\]
Calculate the mass of anhydrous calcium nitrate formed.
The reaction between 15 g of marble and nitric acid is given by the following equation:
\[\ce{CaCO3 + 2HNO3 -> Ca(NO3)2 + H2O + CO2}\]
Calculate the volume of carbon dioxide evolved at S.T.P.
1.56 g of sodium peroxide reacts with water according to the following equation:
\[\ce{2Na2O2 + 2H2O -> 4NaOH + O2}\]
Calculate the mass of sodium hydroxide formed.
Washing soda has formula Na2CO3.10H2O. What mass of anhydrous sodium carbonate is left when all the water of crystallization is expelled by heating 57.2 g of washing soda?
Solve the following numerical problem:
Ethane burns in oxygen according to the chemical equation:
\[\ce{2C2H6 + 7O2 -> 4CO2 + 6H2O}\]
If 80 ml of ethane is burned in 300 ml of oxygen, find the composition of the resultant gaseous mixture when measured at room temperature.
66g of ammonium sulphate is produced by the action of ammonia on sulphuric acid. Write a balanced equation and calculate the mass of acid required.
