select correct statements only 1) Buffered systems exist in equilibrium. 2) In an acid-base reaction, the acid is represented by (OH-). 3) Ka values are derived from aqueous molar concentrations [H+], [A-}, and [HA]. 4) For a weak acid HA, the conjugate base is A- . 5) Ka values are often large in magnitude, so pKa is often instead used. 6)The sum of [HA] and [A-] must always be equal to 1. 7) When formulating a given buffer solution, the volume of weak acid and the volume of conjugate base that must be added will always be equal. 8) The Henderson-Hasselbalch Equation can be used to calculate the amount of weak acid and conjugate base required to build a pH-specific buffer. 9) In the Henderson-Hasselbalch Equation, the logarithmic function used is
select correct statements only
1) Buffered systems exist in equilibrium.
2) In an acid-base reaction, the acid is represented by (OH-).
3) Ka values are derived from aqueous molar concentrations [H+], [A-}, and [HA].
4) For a weak acid HA, the conjugate base is A- .
5) Ka values are often large in magnitude, so pKa is often instead used.
6)The sum of [HA] and [A-] must always be equal to 1.
7) When formulating a given buffer solution, the volume of weak acid and the volume of conjugate base that must be added will always be equal.
8) The Henderson-Hasselbalch Equation can be used to calculate the amount of weak acid and conjugate base required to build a pH-specific buffer.
9) In the Henderson-Hasselbalch Equation, the logarithmic function used is log base 10.
10) The two multiplicative factors FHA and FA- sum to 0.
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