Which ion does sodium hydroxide give in water?
Answer and explanation
Correct answer: Hydroxide ion
The governing concept is the ionisation of bases in aqueous solution. Sodium hydroxide dissociates in water according to NaOH(aq) → Na⁺(aq) + OH⁻(aq). The hydroxide ion increases the basic character of the solution, so option C is correct. Hydrogen ions are associated with acids, while carbonate and chloride ions are not produced by sodium hydroxide alone.
Frequently asked questions
What is the correct answer to this question?
Hydroxide ion
Why is this the correct answer?
The governing concept is the ionisation of bases in aqueous solution. Sodium hydroxide dissociates in water according to NaOH(aq) → Na⁺(aq) + OH⁻(aq). The hydroxide ion increases the basic character of the solution, so option C is correct. Hydrogen ions are associated with acids, while carbonate and chloride ions are not produced by sodium hydroxide alone.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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