Show the dissociation of the following compounds on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. Hydrochloric acid, Sodium chloride,Potassium hydroxide, Ammonia,Acetic acid, Magnesium chloride,Copper sulphate.
Answers
As you mentioned to find dissociation of following compound dissolving in water Hydrochloric acid, Sodium chloride,Potassium hydroxide, Ammonia,Acetic acid, Magnesium chloride,Copper sulphate. And reaction also.
(i) Reaction of Hydrochloric acid when dissolving in water.
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HCl + H₂O ---→ H₃O⁺ + Cl⁻
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The properties of reaction is large . It dissociate completely in water.
(ii) Reaction of Sodium Chloride when dissolving in water.
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NaCl + H₂O ----→ Na⁺ + Cl⁻
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It will completely dissolve in water , No chemical reaction accurs because Water is highly polar .
(iii) Reaction of Pottasium Hydroxide when dissolving in water.
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KOH(s) + H₂O ----→ K⁺ + OH⁻
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When potassium Hydroxide dissolve in water a small change occurs it dissaciate unto potassium ion and Hydroxide ion.
(iv) Reaction of Ammonia when dissolving in water.
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NH₃+ H₂O ----→ OH⁻+ NH₄⁺
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Ammonia dissolve into water readily to give a small Ammonium ion , and Hydroxide ion.
(v) Reaction of Acetic acid when dissolving in water.
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CH₃COOH + H₂O ----→ CH₃COO⁻ + H₃O⁺
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When acitic acid dissolve in water to give Hydronium ion. Large dissaciatuin occurs.
(vi) Reaction of Magnesium Chloride when dissolving in water.
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MgCl₂ + H₂O (dissolve) ---→ Mg²⁺ + Cl⁻
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When Magnesium chloride dissolve it gives magnesium and chloride ion. So the changis ionize.
(vii) Reaction of Copper sulphate when dissolving in water.
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CuSO₄ + H₂O---→ Cu²⁺ + SO₄²⁻ + HOH
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When copper sulphate dissolve it gives into copper and sulphate ion and small amount of energy is released.
Hope it Helps
Dissociation of compounds by dissolving in water
Explanation:
1) Hydrochloric acid dissolved in water.
HCl + H₂O -----> H₃O⁺ + Cl⁻
Proportion of dissociation is large as HCl dissociates completely in water.
2) Sodium Chloride dissolved in water.
NaCl + H₂O -----> Na⁺ + Cl⁻
Completely dissolves in water, but no chemical reaction occurs as water is highly polar.
3) Pottasium Hydroxide dissolved in water.
KOH(s) + H₂O -----> K⁺ + OH⁻
When potassium Hydroxide is dissolved in water, a small change occurs. It dissociates into potassium and hydroxide ions.
4) Ammonia dissolved in water.
NH₃+ H₂O -----> OH⁻+ NH₄⁺
Ammonia readily dissolves in water to give Ammonium and Hydroxide ions.
5) Acetic acid dissolved in water.
CH₃COOH + H₂O -----> CH₃COO⁻ + H₃O⁺
Acetic acid dissolves in water to give Hydronium ion. Large dissociation occurs.
6) Magnesium Chloride dissolved in water.
MgCl₂ + H₂O (dissolve)-----> Mg²⁺ + Cl⁻
Magnesium chloride dissolves to give magnesium and chloride ion.
7) Copper sulphate dissolved in water.
CuSO₄ + H₂O -----> Cu²⁺ + SO₄²⁻ + HOH
Copper sulphate dissolves to gives copper and sulphate ions.