Advertisements
Advertisements
प्रश्न
Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain:
(i) Sodium sulphate
(ii) Copper sulphate
(iii) Iron (II) sulphate
(iv) Zinc carbonate
| Dilute sulphuric acid |
Copper, Iron, |
Copper carbonate, Sodium carbonate |
Advertisements
उत्तर
(i) Preparation of Sodium Sulphate :
Sodium Carbonate + Dilute Sulphuric acid → Sodium Sulphate + Water + Carbon dioxide.
\[\ce{Na2CO3 + H2SO4 →Na2SO4 + H2O + CO2}\]
(ii) Preparation of Copper Sulphate :
Copper Carbonate + dilute Sulphuric acid → Copper Sulphate + water + carbon dioxide.
\[\ce{CuCO3 + H2SO4 → CuSO4 + H2O + CO2}\]
(iii) Preparation of iron (II) sulphate :
Iron + dilute Sulphuric acid → Iron (II) Sulphate + Hydrogen
\[\ce{Fe + H2SO4 → FeSO4 + H2}\]
(iv) Preparation of Zinc Carbonate :
\[\ce{Zn + H2SO4(dil) → ZnSO4 + H2}\]
\[\ce{ZnSO4 + Na2CO3 → ZnCO3 + Na2SO4}\]
APPEARS IN
संबंधित प्रश्न
The following is a list of methods for the preparation of salts.
A - direct combination of two elements
B - reaction of a dilute acid with a metal.
C - reaction of a dilute acid with an insoluble base.
D - titration of a dilute acid with a solution of soluble base.
E - reaction of two solutions of salts to form a precipitate.
Choose from the above list A to E, the best method for preparing the following salts by giving a suitable equation in each case:
- Anhydrous ferric chloride,
- Lead chloride,
- Sodium sulphate,
- Copper sulphate.
State how would you prepare copper (II) oxide from
copper sulphate
Write the balanced equation for the preparation of the following compounds, starting from iron and other substance:
Iron (II) sulphate
Choosing the correct words given in brackets, complete the sentence given below: Lead sulphate from lead nitrate.
Which of the following methods, (a), (b), (c), (d) or (e) is generally used for preparing the chlorides listed below from (i) to (v). Answer by writing down the chloride and the letter pertaining to the corresponding method. Each letter is to be used only once.
(a) Action of an acid on a metal.
(b) Action of an acid on an oxide or carbonate.
(c) Direct combination.
(d) Neutralization of an alkali by an acid.
(e) Precipitation (double decomposition).
(i) copper(II) chloride.
(ii) iron(II) chloride.
(iii) iron(IIl) chloride.
(iv) lead (II) chloride.
(v) sodium chloride.
What is the difference between the chemical nature of an aqueous solution of HCl and an aqueous solution of NH3
Explain why Anhydrous FeCl3 cannot be prepared by heating hydrated iron (III) chloride.
Select the word/s given which are required to correctly complete the blanks.
When solution M and O are mixed together, the products will be ______ and ______.
Select the word/s given which are required to correctly complete the blanks.
If a piece of magnesium was put into a solution M, ______ gas would be evolved.
For the preparation of the following salts - give a balanced equation in the following case.
Lead [II] chloride from lead carbonate [give two equations]
