Ethane burns in oxygen to form CO2 and H2O according to the equation:
2C2H6 + 7O2 → 4CO2 + 6H2O
If 1250 cc of oxygen is burnt with 300 cc of ethane.
Calculate:
(i) the volume of CO2 formed
(ii) the volume of unused O2
Three solutions P, Q and R have pH value of 3.5, 5.2 and 12.2 respectively. Which one of these is a:
(i) Weak acid?
(ii) Strong alkali?
Give a chemical test to distinguish between the following pairs of chemicals:
Lead nitrate solution and zinc nitrate solution
Lead Nitrate and Zinc nitrate solution can be distinguished by adding NaCl in solution,
Pb(NO3)2 will give a precipitate of PbCl2 whereas Zn(NO3)2 will not.
Give a chemical test to distinguish between the following pairs of chemicals:
Sodium chloride solution and sodium nitrate solution
write a balanced equation for the preparation of the following salts:
Copper sulphate from copper carbonate.
Write a balanced equation for the preparation of the following salts:
Zinc carbonate from zinc sulphate
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?
Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with:
(i) Ethanol?
(ii) Carbon?