Which statement is incorrect?
1
In an electrolysis experiment, amino acids migrate at the isoelectric point towards electrodes
2
p-aminobenzenesulphonic acid is a dipolar ion: while p-aminobenzoic acid is not
3
Sulphanilic acid is soluble in base, but not in acid
4
\(\rm {H}_3 \stackrel{+}{{N}} {CH}_2 {COOH}\)pka = 2.4) is more acidic than RCH2COOH (pKa = 4 – 5) .pka = 2.4) is more acidic than RCH2COOH (pKa = 4 – 5) .