For the graphical determination of the equivalence point for a titration, which
ID: 1057593 • Letter: F
Question
For the graphical determination of the equivalence point for a titration, which of the following is (are) true? The steepest slope of the titration curve is the equivalence point. The equivalence occurs where the first derivative of the titration curve reaches its largest value. The equivalence point occurs where the second derivative of the titration curve equals zero. Circle the letter of the best choice below I only II only III only II and III only I, II. and III Which one of the following statements is FALSE regarding the titration of a monoprotic weak acid with a strong base? Circle the best choice. At the equivalence point, the pH is due to the hydrolysis of water by the conjugate base, A^-. Beyond the equivalence point, the pH is due to excess conjugate base. A^- Before strong base is added, the pH is due to the ionization of the weak acid, HA A few mL before the equivalence point, the pH is due to a mixture of A^- and HA. The pH at the equivalence point is basic.Explanation / Answer
5. I, II and III correct.
Slope of the titration curve is higest at the equivalence point. It take a steep rise at the equivalence point. At this point , first derivative i.e dpH/dV will be maximum and second derivative is zero.
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B is false. beyond the equivalence point th epH is due to excess base added