1.

Which of the following acids has the lowest pKa value?(a) Acetic acid(b) Sulphuric acid(c) Dil.HCl(d) Oxalic acid

Answer» Right choice is (b) Sulphuric acid

To explain: The stronger the acid, the lower its pKa. Sulphuric acid is the strongest acid of all the other acids mentioned, so its pKa is the least.


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