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Question

Name the ions formed when — HCl; HNO3; H2SO4; CH3COOH; NaOH and NH4OH ionise in aq. soln.

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Answer

(i) When HCl is dissolved in water, it is ionised into hydrogen ion [or H3O+ ion] and chloride ion.

HCl ⟶ H+ + Cl

The H+ cannot exist independently, therefore, it combines with water molecule to form hydronium ion (H3O+)

H+ + H2O ⟶ H3O+

(ii) When HNO3 is dissolved in water, it is ionised into hydronium ion and nitrate ion.

HNO3 ⟶ H+ + NO3

H+ + H2O ⟶ H3O+

(iii) When H2SO4 is dissolved in water, it is ionised into hydronium ion and sulphate ion.

H2SO4 ⟶ 2H+ + SO42-

H+ + H2O ⟶ H3O+

(iii) When CH3COOH is dissolved in water, it is ionised into hydronium ion and acetate ion.

CH3COOH ⟶ CH3COO + H+

H+ + H2O ⟶ H3O+

(iii) When NaOH is dissolved in water, it is ionised into sodium ion and hydroxyl ion.

NaOH ⟶ Na+ + OH

(iv) When NH4OH is dissolved in water, it is ionised into ammonium ion and hydroxyl ion.

NH4OH ⟶ NH4+ + OH

💡 Some Related Questions

Flash Education Question and Answer Icon

The diagram represents the preparation of sodium sulphate salt from dil. H2SO4 acid and sodium hydroxide.

1. Name the apparatus ‘A’.

2. Name the substance ‘X’ placed in ‘A’ and the substance ‘Y’ placed in B.

3. State the reason for conducting the titration using the apparatus ‘A’ and ‘B’.

4. State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt.

5. State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization.

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