The aqueous solution of a non-metal oxide is acidic. Why can it react with lime water?
Answer and explanation
Correct answer: Because lime water is basic
Lime water is an aqueous solution of calcium hydroxide, Ca(OH)2, and is basic because it provides hydroxide ions. An acidic non-metal oxide or its acidic aqueous product can react with this base in a neutralisation reaction. For example, carbon dioxide reacts with lime water to form calcium carbonate and water: CO2 + Ca(OH)2 → CaCO3 + H2O. Thus A is correct; B confuses a solution with a metal, while C and D are chemically false.
Frequently asked questions
What is the correct answer to this question?
Because lime water is basic
Why is this the correct answer?
Lime water is an aqueous solution of calcium hydroxide, Ca(OH)2, and is basic because it provides hydroxide ions. An acidic non-metal oxide or its acidic aqueous product can react with this base in a neutralisation reaction. For example, carbon dioxide reacts with lime water to form calcium carbonate and water: CO2 + Ca(OH)2 → CaCO3 + H2O. Thus A is correct; B confuses a solution with a metal, while C and D are chemically false.
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.
