Igcse Model Questions Vol1 2023 Biology Question 3
Practice practical question 3 from the 2023 Igcse Model Questions Vol1 Biology examination. This question covers Nutrition, Vitamin C, Titration, Effect of cooking .
A student is investigating the effect of heat on the vitamin C content of orange juice using an iodine titration. Two 2.00 g samples of fresh orange juice are prepared. Sample A is titrated immediately (raw) and sample B is heated in a water bath at 80 °C for 5 minutes before titration. The iodine solution used is 0.0100 M. The volumes of iodine solution required to reach the end‑point are: - Sample A (raw): 12.5 mL - Sample B (cooked): 8.0 mL Vitamin C (ascorbic acid) reacts with iodine on a 1:1 mole basis. Molar mass of vitamin C = 176.12 g mol⁻¹. Answer the following:
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This is Igcse Model Questions Vol1 2023 Biology Question 3. It is one of the practical questions from the 2023 Igcse Model Questions Vol1 Biology examination.
The question covers Nutrition, Vitamin C, Titration, Effect of cooking .
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