Water is formed by which ions in neutralisation?
Answer and explanation
Correct answer: Hydrogen ion and hydroxide ion
During neutralisation, the characteristic ions of an acid and a base react directly. A hydrogen ion combines with a hydroxide ion to produce one water molecule: H⁺ + OH⁻ → H₂O. Therefore option A is correct. Sodium and chloride ions can form sodium chloride, while calcium–carbonate and copper–sulphate combinations represent salts or precipitates; they are not the ions that directly form water.
Frequently asked questions
What is the correct answer to this question?
Hydrogen ion and hydroxide ion
Why is this the correct answer?
During neutralisation, the characteristic ions of an acid and a base react directly. A hydrogen ion combines with a hydroxide ion to produce one water molecule: H⁺ + OH⁻ → H₂O. Therefore option A is correct. Sodium and chloride ions can form sodium chloride, while calcium–carbonate and copper–sulphate combinations represent salts or precipitates; they are not the ions that directly form 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.
