Making use only of a substance chosen from those given below:
Dilute sulphuric acid sodium carbonate
Zinc sodium sulphite
Lead calcium carbonate
Give the equation for the reaction by which you could obtain:
(i) Hydrogen
(ii) Carbon dioxide
(iii) Zinc carbonate (two steps required)
i) Zn +H2SO4 ---> ZnSO4 +H2
ii) Na2CO3 +H2SO4 ----> Na2SO4 +H2O +CO2
iii) ZnSO4 +Na2CO3 ----> ZnCO3 +Na2SO4Copy and complete the following table relating to important industrial processes. Output refers to the product of the process, not the intermediate steps.
Name of process |
Inputs |
Catalyst |
Equation for catalysed reaction |
Output |
Contact process |
|
What is the property of concentrated sulphuric acid which allows it to be used in the preparation of hydrogen chloride and nitric acid?
Copy and complete the following table relating to important industrial processes. Output refers to the product of the process, not the intermediate steps.
Name of process |
Inputs |
Catalyst |
Equation for catalysed reaction |
Output |
Haber process |
Hydrogen+ |
|
Ammonia |
|
Ostwald’s process |
Ammonia +air |
|
Nitric acid |
What property of concentrated sulphuric acid is in action when sugar turns black in its presence.