If a weak monoprotic acid, HA, is titrated with strong base, what is NOT true at the half equivalence point?pH = pKapH = 7.0[HA]
= [A-]Buffer capacity is maximized
1 answer:
Answer:
pH can be different from 7 ( second statement is false)
Step-by-step explanation:
since
pH=pKa + log [A-]/[HA]
at half of the equivalence point
[HA]= [A-] (third statement is true)
and therefore
pH = pKa (first statement is true)
since pH = pKa , pH can be different from 7 ( second statement is false)
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Rounding to nearest thousand gives 76,000 mg of chlorine
( - 0.625, - 1.75 )
so since the first equation is already simplified , just replace it in the second equation
