Assertion :All strong monoprotic acid with same concentration in dilute solution show same $p H$ Reason: Water shows leveling effect

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Levelling effect refers to the effect of solvent on the properties of acids and bases. The strength of a strong acid is limited by the basicity of the solvent. Similarly, the strength of a strong base is levelled by the acidity of the solvent. When a strong acid is dissolved in water, it reacts with it to form hydronium ion. And because of this effect, all strong monoprotic acid with the same concentration in dilute solution shows the same $p H$ .

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