Question

² What is the pka of the acid in question? a) 2.21. 6) 3.41 e) 4,90 ) 3.06. e) 10.5¥

Answer 1

pka of acid can be determined graphically by calculating pH at half equivalence point.

The equivalence point in the graph lies at pH 8.04 and V= 25.81ml

Half equivalence point = V= 12.91 ml and ph ph that point is 3.41

pKa= 3.41