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प्रश्न
Distinguish between the given pairs of compounds using the test given within brackets:
A lead salt and a zinc salt (using excess ammonium hydroxide)
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उत्तर
On addition of the excess of ammonium hydroxide to lead nitrate, a chalky white ppt. of Pb
(OH)2 is formed. On addition of the excess of ammonium hydroxide to zinc sulfate, a
white gelatinous ppt. of Zn(OH)2 is formed which is soluble.
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संबंधित प्रश्न
How would you obtain salt from another salt?
How is the following salt prepared:
Magnesium carbonate from magnesium chloride.
Describe giving all practical details, how would you prepare:
lead sulphate from metallic lead.
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 |
Write equation for the laboratory preparation of the following salt, using sulphuric acid: Iron (II) sulphate from the iron.
Match the salts given in Column I with their method of preparation given in Column II:
| Column I | Column II | ||
| (i) | Pb(NO3)2 from PbO | (a) | Simple displacement |
| (ii) | MgCl2 from Mg | (b) | Titration |
| (iii) | FeCl3 from Fe | (c) | Neutralization |
| (iv) | NaNO3 from NaOH | (d) | Precipitation |
| (v) | ZnCO3 from ZnSO4 | (e) | Combination |
Give the equation for the preparation of the following salt from the starting material given.
Iron (III) Chloride from Iron
Give the equation for the preparation of the following salt from the starting material given.
Lead chloride from lead carbonate (two equations)
What is the difference between the chemical nature of an aqueous solution of HCl and an aqueous solution of NH3
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.
