What will be the nature of sodium carbonate formed by heating baking soda?
Answer and explanation
Correct answer: Basic
Heating baking soda, sodium hydrogen carbonate, produces sodium carbonate, carbon dioxide, and water: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O. Sodium carbonate is a salt of a strong base and a weak acid; its aqueous solution undergoes hydrolysis and contains excess hydroxide ions. Hence the solution, and the substance in the school-level sense asked here, is basic. Option A is correct; it is not acidic, neutral, or a description of metallic nature.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
Heating baking soda, sodium hydrogen carbonate, produces sodium carbonate, carbon dioxide, and water: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O. Sodium carbonate is a salt of a strong base and a weak acid; its aqueous solution undergoes hydrolysis and contains excess hydroxide ions. Hence the solution, and the substance in the school-level sense asked here, is basic. Option A is correct; it is not acidic, neutral, or a description of metallic nature.
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.
