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प्रश्न
Write the equation for the laboratory preparation of sodium sulphate using dilute sulphuric acid.
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उत्तर
\[\ce{2NaOH + dilute H2SO4 -> Na2SO4 + 2H2O}\]
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संबंधित प्रश्न
How is the following salt prepared:
Magnesium carbonate from magnesium chloride.
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
Explain hydronium ion. Write the ionization of sulphuric acid showing the formation of hydronium ion.
Choosing the correct words given in brackets, complete the sentence given below: Lead sulphate from lead nitrate.
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.
Copper sulphate from copper (II) oxide
Explain the following method with example.
Direct combination
Explain why Anhydrous FeCl3 cannot be prepared by heating hydrated iron (III) chloride.
Mention the colour changes observed when the following indicators are added:
| Solution | Acids | Alkalies |
| (a) Alkaline phenolphthalein solution | ||
| (b) Methyl orange solution | ||
| (c) Neutral litmus solution |
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 iron (II) sulphate.
