Which of the following structures represents EDTA?

University of Ilorin CHM107 2026 past question

1. Two nitrogen atoms joined by –CH₂CH₂–, each bearing two –CH₂COOH groups (four acid arms)
2. A central carbon bearing one –OH and three –COOH groups (citric acid)
3. Three nitrogen atoms with five –CH₂COOH arms (DTPA)
4. Two N atoms linked through an ether chain –CH₂CH₂OCH₂CH₂OCH₂CH₂– with four acid arms (EGTA)

Register free to see the answer and step-by-step explanation

More University of Ilorin CHM107 2026 past questions

Related questions

• Which of the following ions can be determined using direct complexometric titration?
• The most commonly used titrant in complexometric titration is:
• EDTA stands for:
• The pH of 0.003 M HCl is:
• If EDTA forms complexes with metal ions of different charges, it is described as:
• The oxidation state of carbon in H₂C₂O₄ is: