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NEET levelSingle correct optionDifficulty 1 of 3g2174

In water, $HCl$ and $HNO X_{3}$ appear to be equally strong acids. This levelling effect occurs because

Aboth acids ionise completely and give the same acid species, $H X_{3} O X^{+}$
Bboth acids have the same pKa value
Cboth acids have the same molar mass
Dwater is a stronger acid than both

Answer: A

Water is basic enough to take a proton completely from any acid stronger than

H X_{3} O X^{+}

. The strongest acid that can exist in water is therefore

H X_{3} O X^{+}

, and all strong acids are levelled to it.

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