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a solution is prepared by dissolving 0.23 mol of hypochlorous acid and 0.27 mol of sodium hypochlorite in water sufficient to yield 1.00 l of solution. the addition of 0.05 mol of hcl to this buffer solution causes the ph to drop slightly. the ph does not decrease drastically because the hcl reacts with the present in the buffer solution. the ka of hypochlorous acid is 1.36 x 10-3. group of answer choices hydronium ion water hypochlorite ion this is a buffer solution: the ph does not change upon addition of acid or base. hypochlorous acid

Answer :

The pH does not decrease drastically because the HCl reacts with the hypochlorite ion present in the buffer solution.

The hypochlorous acid , HClO is the weak acid . the ka of the HClO is 1.36 × 10⁻³. the conjugate base is ClO⁻ form the sodium hypochlorite , NaClO, this solution is called as the buffer solution . when we add the HCl which is a strong acid , the reaction which occurs is given as follows :

HCl + ClO⁻    ---->  HClO + Cl⁻

so, it is clear from the above equation that if we add the HCl in to the solution then the HCl react with the hypochlorite ion that is present in the solution. the pH does not decreases drastically.

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