Chemistry
Give reasons for the following:
An aqueous solution of the salt ammonium chloride is acidic in nature while an aqueous solution of sodium chloride is neutral.
Acids Bases Salts
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Answer
As ammonium chloride is a salt of a weak alkali and strong acid, hence it's aqueous solution is acidic in nature. On the other hand, sodium chloride is a product of strong alkali and strong acid hence, it's aqueous solution is neutral in nature.
| Neutralization reaction | Base + Acid | Salt | + water | Nature |
|---|---|---|---|---|
| Weak alkali + strong acid | NH4OH + HCl | ⟶ NH4Cl | + H2O | acidic |
| Strong alkali + strong acid | NaOH + HCl | ⟶ NaCl | + H2O | neutral |
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- Name the apparatus 'A'.
- Name the substance 'X' placed in 'A' and the substance 'Y' placed in B.
- State the reason for conducting the titration using the apparatus 'A' and 'B'.
- State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt.
- State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization.
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Concentrated sulphuric acid is a weaker acid compared to dilute sulphuric acid.