Which ion do bases give when dissolved in water?
Answer and explanation
Correct answer: Hydroxide ion
By the Arrhenius definition, a base produces hydroxide ions in water or increases their concentration in an aqueous solution. For instance, sodium hydroxide dissociates as NaOH → Na⁺ + OH⁻, and the OH⁻ ions account for its basic nature. Hence option B is correct. Hydrogen ions are associated with acids, whereas chloride and nitrate ions are anions found in particular salts.
Frequently asked questions
What is the correct answer to this question?
Hydroxide ion
Why is this the correct answer?
By the Arrhenius definition, a base produces hydroxide ions in water or increases their concentration in an aqueous solution. For instance, sodium hydroxide dissociates as NaOH → Na⁺ + OH⁻, and the OH⁻ ions account for its basic nature. Hence option B is correct. Hydrogen ions are associated with acids, whereas chloride and nitrate ions are anions found in particular salts.
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.
