UPSC Combined Geo-Scientist, Mains · 2017 · Mains Paper I

Q2(c). Iodimetry and iodometry

10 marks
Topic: Redox titrations
Answered

Question

Iodine behaves differently in iodometric and iodimetric titrations. Provide an explanation.

Answer in brief

Iodimetry uses standard iodine directly as an oxidising titrant; iodometry determines an oxidant indirectly through iodine liberated from excess iodide.

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CoversIodimetryiodometryRedox titrations

All parts of Question 2

2(a) VSEPR shapes10 marks
2(b) Lewis acidity across the first transition series10 marks
2(c) Iodimetry and iodometry10 marks