Write a balanced chemical equation with state symbols for the following reaction.
Potassium hydroxide solution (in water) reacts with nitric acid solution (in water) to produce sodium nitrate solution and water:

Correct option is A

The correct answer is (a) 2KOH(aq) + 2HNO₃(aq) → 2KNO₃(aq) + 2H₂O(l)

Explanation:
• Potassium hydroxide and nitric acid are both used as aqueous solutions, so they must be written as (aq).
• Neutralization of an acid and base produces salt (potassium nitrate), which remains in solution → (aq).
• Water formed is written as (l).
• Option (a) correctly provides the balanced equation with state symbols as required.

Information Booster:
• Neutralization reactions follow the pattern: Acid + Base → Salt + Water.
• Potassium nitrate (KNO₃) is highly soluble in water, so it stays in aqueous form.
• The net ionic equation is: H⁺(aq) + OH⁻(aq) → H₂O(l).

Additional Knowledge:
(b) Incorrect — HNO₃ should be aqueous; water should be (l).
(c) Incorrect — state symbols missing.
(d) Incorrect — KOH, HNO₃ and KNO₃ are not used/stored as liquids for this reaction.

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