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प्रश्न
How many salts can be obtained from ortho phosphoric acid? Is there any difference in the salts formed by the acid?
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उत्तर
Ortho phosphoric acid is H3PO4 i.e; a tribasic acid has three replaceable hydrogen atoms so it forms three series of salts, namely two acid salts and a normal salt, with NaOH as:
NaOH + H3PO4 → NaH2PO4 + H2O
Acid salt
( Monosodium hydrogen salt )
2NaOH + H3PO4 → Na2HPO4 + 2H2O
Acid salt
( Disodium hydrogen phosphate )
3NaOH + H3PO4 → Na3PO4 + 3H2O
Normal salt
( Sodium Phosphate )
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संबंधित प्रश्न
How would you obtain salt from another salt?
How is the following salt prepared:
Copper (II) sulphate from copper (II) oxide?
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 |
Choose the method of preparation of the following salts, from the methods given in the list:
[List : A. Neutralization B. Precipitation C. Direct combination D. Substitution ]
(i) Lead chloride
(ii) Iron (II) sulphate
(iii) Sodium nitrate
(iv) Iron (III) chloride
Give the preparation of the salt given in the left column by matching with the methods given in the right column. Write balanced equations for each preparation.
| Salt | Method of Preparation |
| Zinc sulphate | Precipitation |
| Ferrous sulphide | Displacement |
| Barium sulphate | Neutralization |
| Sodium sulphate | Synthesis |
Give equation to prepare the following as directed
NaHCO3 from Na2CO3
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What is the first step that is required to prepare lead sulphate from lead carbonate?
Give the equation for the preparation of the following salt from the starting material given.
Potassium sulphate from potassium hydroxide solution
Give the equation for the preparation of the following salt from the starting material given.
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You are provided with the following chemicals:
NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn.
Using the suitable chemicals from the given list only, state briefly how you would prepare sodium zincate.
