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प्रश्न
Explain why It is necessary to find out the ration of reactants required in the preparation of sodium sulphate.
उत्तर
Since sodium hydroxide and sulphuric acid are both soluble, an excess of either of them cannot be removed by filtration. Therefore it is necessary to find out on small scale, the ratio of solutions of the two reactants.
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संबंधित प्रश्न
How is the following salt prepared:
Calcium sulphate from calcium carbonate,
How is the following salt prepared:
Sodium nitrate from sodium hydroxide.
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 of preparing the following salt by giving a suitable equation in the following case:
Anhydrous ferric chloride.
Give the preparation of the salt shown in the left column by matching with the methods given in the right column. Write a balanced equation for each preparation.
| Salt | Method of preparation |
| Zinc Sulphate | Precipitation |
| Ferrous sulphide | Oxidation |
| Barium Sulphate | Displacement |
| Ferric sulphate | Neutralisation |
| Sodium sulphate | Synthesis |
Explain why fused calcium chloride is used in the preparation of FeCI3?
Explain hydronium ion. Write the ionization of sulphuric acid showing the formation of hydronium ion.
State how would you prepare copper (II) oxide from
copper sulphate
Give equation to prepare the following as directed
NaHCO3 from Na2CO3
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: Sodium sulphate from sodium carbonate.
