What products are formed when dilute hydrochloric acid is added to sodium carbonate?
Answer and explanation
Correct answer: Sodium chloride, water and carbon dioxide
The governing rule is that an acid reacts with a carbonate to produce a salt, water and carbon dioxide. Here, hydrochloric acid reacts with sodium carbonate: Na2CO3 + 2HCl → 2NaCl + H2O + CO2. Thus sodium chloride, water and carbon dioxide are formed, so option B is correct. Option A omits carbon dioxide, while C and D contain substances not supplied by the reactants.
Frequently asked questions
What is the correct answer to this question?
Sodium chloride, water and carbon dioxide
Why is this the correct answer?
The governing rule is that an acid reacts with a carbonate to produce a salt, water and carbon dioxide. Here, hydrochloric acid reacts with sodium carbonate: Na2CO3 + 2HCl → 2NaCl + H2O + CO2. Thus sodium chloride, water and carbon dioxide are formed, so option B is correct. Option A omits carbon dioxide, while C and D contain substances not supplied by the reactants.
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.
