In a titration of strong monoprotic acids and bases, there is a Urge change in p

Question

In a titration of strong monoprotic acids and bases, there is a Urge change in pH____when the concentration of acid is cxactly equal to the concentration of base. at the point where pH = pKa of the acid. when the volume of acid is exactly equal to the volume of base. when the number of moles of acid is cxactly equal to the number of moles of base. at the point where pH = pKb of the base. Buffer is: A neutralized salt Solution of a weak acid or base and its conjugate partner acid The equilibrium of a weak acid The equilibrium of a weak base The equilibrium of a strong

Explanation / Answer

Question 12.

Usually when we have an acid-base titration of strong acids and base, the change in the pH occurs when we are approaching to the equivalence point. In this case, when this happens, the number of moles of the acid and base are equals. And is in this point where the pH change is larger than the others, so, the correct option here would be option D.

Question 13.

A buffer is always a solution of a weak base or weak acid with it's respective conjugate. For example a buffer of NH3/NH4+, CH3COOH/CH3COO-. So the correct option would be B).

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