Vitamin C as Reducing Agent

C6H8O6 + I2 → C6H6O6 + 2HI

개요

Ascorbic acid (vitamin C) reduces iodine to iodide while being oxidized to dehydroascorbic acid. The enediol group on ascorbic acid is the active reducing center, losing two electrons. This reaction is the basis of the standard method for determining vitamin C content in foods.

참여 물질

역할 물질 계수 상태
반응물 Ascorbic Acid C₆H₈O₆ 1 (aq)
반응물 Iodine I 1 (aq)

일상 속 예시

School science experiments often measure vitamin C in different juices by titrating with iodine solution until the starch indicator turns blue-black.

산업적 중요성

비타민 C 아이오딘 적정은 표준 의약품 품질 관리 방법입니다. 식품에서의 아스코르브산 항산화 작용은 환원 성질에 기반합니다.

성질

유형
Redox
가역 반응
아니오
에너지
발열
ΔH
-58.0 kJ/mol

관련 반응

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Copper Reduction of Silver Ion Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Chlorine Oxidation of Bromide Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide as Oxidizing Agent (Acidic) Displacement of Hydrogen from Acid by Magnesium

Frequently Asked Questions

What is the equation for Vitamin C as Reducing Agent?
The balanced equation is: C₆H₈O₆ + I₂ → C₆H₆O₆ + 2HI.
What type of reaction is Vitamin C as Reducing Agent?
Vitamin C as Reducing Agent is a redox reaction.
Is Vitamin C as Reducing Agent exothermic or endothermic?
Vitamin C as Reducing Agent is exothermic (releases energy). The enthalpy change (ΔH) is -58.0 kJ/mol.