CBSE Class 10 Science 2018 · Paper 31/1 · Question 7(b)
The pH of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write a chemical equation for its formation. List its two uses.
Answer
The salt is baking soda, , used in baking powder and as an antacid.
Salt: baking soda, sodium hydrogencarbonate (sodium bicarbonate), .
Formation:
Uses (any two): (i) For making baking powder; (ii) As an ingredient of antacids, to neutralise excess acid in the stomach; (iii) In soda-acid fire extinguishers.
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