In solution, aminoethanoic acid (glycine) can be represented as NH+3 CH2COO. This implies that it

Assessment: WAEC SSCE - Chemistry - 1991 (Objective) Subject: Chemistry

Question 1 Report

In solution, aminoethanoic acid (glycine) can be represented as NH+3 CH2COO. This implies that it
Answer Details
The representation of aminoethanoic acid (glycine) as NH+3 CH2COO indicates that it can function as a weak acid or a weak base. The NH+3 group is a positively charged ion (cation) which can act as an acid by donating a hydrogen ion (proton) to a base. On the other hand, the CH2COO group is a negatively charged ion (anion) which can act as a base by accepting a proton from an acid. Therefore, aminoethanoic acid (glycine) can function as both an acid and a base in solution, depending on the nature of the other species present in the solution.
Read lesson note on Acids, Bases And Salts (JAMB)
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