At what point will a  buffer solution cease to moderate changes in pH?a. Only after all the acid or the base that needs to be buffered has been added.b. When waters equilibrium constant Kw has been reached.c. When the weak base acid and weak base salt concentration have been reached.d. When the acting buffering component is all neutralized.

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Asked Jul 14, 2019
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At what point will a  buffer solution cease to moderate changes in pH?

a. Only after all the acid or the base that needs to be buffered has been added.

b. When waters equilibrium constant Kw has been reached.

c. When the weak base acid and weak base salt concentration have been reached.

d. When the acting buffering component is all neutralized.

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Expert Answer

Step 1

A buffer solution is the mixture of weak acid or base with their respective salts. They exhibit resistance in the change in pH even after addition of little amount of acid or base to the solution.

Step 2

If any acid or base is added to the buffer solution, the excess of H3O+ or OH- are neutralized with the help of neutralization reactions occu...

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A+ H2O (conjugate acid reacts with strong base) HA +OH A H HA (conjugate base reacts with strong acid)

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