Q9 of 270 Page 66

Give the names and formulae of two strong acids and two weak acids.

Strong acids- Hydrochloric acid(HCl) and Nitric acid(HNO3).

Weak acids- Acetic acid(CH3COOH), Carbonic Acid(H2CO3), Citric acid(C6H8O7).



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7 How will you test for the gas which is liberated when hydrochloric acid reacts, with an active metal? 8 Name the gas evolved when dilute HCL reacts with sodium hydrochloric. How is it recognized? 10 Name one natural source of each of the following acids:

(a) Citric acid (b) Oxalic acid


(c) Lactic acid (d) Tartaric acid

 11 Name one animal and one plant whose stings contain formic acid (or methanoic acid).