Why is an acidic substance mixed with baking soda in baking powder?
Answer and explanation
Correct answer: To produce carbon dioxide
Baking powder contains baking soda and a mild edible acid. When the mixture becomes wet and is heated, the acid reacts with sodium hydrogen carbonate and produces carbon dioxide: acid + NaHCO₃ → salt + CO₂ + water. The gas forms bubbles that expand and make dough rise. Therefore option A is correct; hydrogen, chlorine, and metal are not produced in this process.
Frequently asked questions
What is the correct answer to this question?
To produce carbon dioxide
Why is this the correct answer?
Baking powder contains baking soda and a mild edible acid. When the mixture becomes wet and is heated, the acid reacts with sodium hydrogen carbonate and produces carbon dioxide: acid + NaHCO₃ → salt + CO₂ + water. The gas forms bubbles that expand and make dough rise. Therefore option A is correct; hydrogen, chlorine, and metal are not produced in this process.
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.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
