7. The curve for the titration of 25.0 mL of 0.100 M CsHsN(aq), pyridine, with 0.100...

Question

Question

7. The curve for the titration of 25.0 mL of 0.100 M CsHsN(aq), pyridine, with 0.100 M HCl(aq) is given below. Estimate the p

Answer 1

Answer #1

Answer

d) 8.8

Explanation

At half equivalence point

pH = pKa

equivalence point = 24

half equivalence point = 12

at half equivalence point pH = 5.1

pKa of C5H5NH⁺ = 5.1

pKb = 14 - pKa

pKb of C5H5N = 14 - 5.1 = 8.9

Answer 2

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