BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Buffers allow for the pH of a solution to change easily as more acid or base is added.
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Buffers prevent the pH of a solution from decreasing as more acid is added; however, they do not prevent the pH from increasing as more base is added.
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Buffers resist changes in pH by absorbing excess H+ and OH-as more acid or base is added to the solution.
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Buffers have extra hydrogen bonds that minimize pH changes due to changes in energy.
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Detailed explanation-1: -A buffer’s job is to prevent large pH changes upon the addition of small amounts of either strong acid or strong base. As long as the buffer capacity is not exceeded, any added strong acid or strong base will be neutralized by the buffer components.
Detailed explanation-2: -A buffer is a solution that can resist pH change upon the addition of an acidic or basic components. It is able to neutralize small amounts of added acid or base, thus maintaining the pH of the solution relatively stable.
Detailed explanation-3: -Buffers are solutions that resist changes in pH, upon addition of small amounts of acid or base. The can do this because they contain an acidic component, HA, to neutralize OH-ions, and a basic component, A-, to neutralize H+ ions. Since Ka is a constant, the [H+] will depend directly on the ratio of [HA]/[A-].