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प्रश्न
Explain why Anhydrous FeCl3 cannot be prepared by heating hydrated iron (III) chloride.
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उत्तर १
On heating the hydrate, HCl acid is released and basic salt (FeOCl) or ferric oxide remains. Hence, anhydrous ferric chloride cannot be prepared by heating the hydrate.
उत्तर २
Heating hydrated Iron (III) chloride cannot produce anhydrous FeCl3, but instead creates FeCl3.6H2O, Fe2O3.H2O, and HCl.
\[\ce{2[FeCl3.6H2O]->[\Delta] Fe2O3 + 9H2O + 6HCl}\]
संबंधित प्रश्न
How is the following salt prepared:
Lead (II) oxide from lead.
How is the following salt prepared:
Copper (II) sulphate from copper (II) oxide?
Describe giving all practical details, how would you prepare:
lead sulphate from metallic lead.
State how would you prepare copper (II) oxide from
copper sulphate
Choosing the correct words given in brackets, complete the sentence given below: Sodium sulphate from sodium carbonate.
Write the equations for the reaction to prepare lead sulphate from lead carbonate.
Name the method used for preparation of the following salts from the list given below:
(i) Sodium nitrate
(ii) Iron (III) chloride
(iii) Lead chloride
(iv) Zinc sulphate
(v) Sodium hydrogen sulphate
List :
(a) Simple displacement
(b) Neutralization
(c) Decomposition by acid
(d) Double decomposition
(e) Direct synthesis
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
A covalent oxide of a metalloid.
Match the salts underlined in Column A with the most suitable method of preparation given in Column B.
| Column A | Column B | ||
| (a) | \[\ce{ZnCl2 \text{from} Zn}\] | 1. | Precipitation |
| (b) | \[\ce{KNO3 \text{from} KOH}\]. | 2. | Direct combination |
| (c) | \[\ce{CaCO3 \text{from} CaCl2}\]. | 3. | Displacement reaction |
| 4. | Neutralization |
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.
