Water is formed by which ions in neutralisation?
Answer and explanation
Correct answer: Hydrogen ion and hydroxide ion
In an acid-base neutralisation, the essential ionic step is H⁺ + OH⁻ → H₂O. The hydrogen ion comes from the acid and the hydroxide ion comes from the base. Sodium and chloride ions, for example, remain as spectator ions and form sodium chloride rather than water. The other listed ion pairs can form salts or other substances, but they are not the direct ions that make water.
Frequently asked questions
What is the correct answer to this question?
Hydrogen ion and hydroxide ion
Why is this the correct answer?
In an acid-base neutralisation, the essential ionic step is H⁺ + OH⁻ → H₂O. The hydrogen ion comes from the acid and the hydroxide ion comes from the base. Sodium and chloride ions, for example, remain as spectator ions and form sodium chloride rather than water. The other listed ion pairs can form salts or other substances, but they are not the direct ions that make water.
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.
