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Minor Versionm

by Suchitha Vishwa

Video Overview

    • Test tubes, beaker and Iodine should be handled carefully.

    • Please do not ingest any of the materials.

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  1. Take half a teaspoon of starch and mix it with 50 ml water thoroughly.
    • Take half a teaspoon of starch and mix it with 50 ml water thoroughly.

    • Add 5-6 drops of Iodine to the starch solution.

    • Solution will turn to dark blue.

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    • Take 3 ml of any food sample you want to test for Vitamin C . Find our samples below:

    • Take 3ml of orange juice, add 5-6 drops of indicator and shake gently.

    • Take 3ml of Vitamin C solution(1/4th spoon vitamin C in 20ml) and add 5-6 drops of indicator and shake gently.

    • Take 3 ml of salt solution(1/4th spoon of salt in water) and add 5-6 drops of indicator and shake gently.

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    • In the test tube containing orange juice,blue colour of the indicator has disappeared, indicating the presence of a good amount of Vitamin C.

    • In the test tube containing Vitamin C solution,blue colour of the indicator has disappeared,indicating the presence of a good amount of Vitamin C.

    • In the test tube containing salt water, blue colour of the indicator has only been diluted indicating the absence of Vitamin C.

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    • Quantities of ingredients should exactly match the measurements in the instructions.

    • Careful observation should be made after adding indicator to the food samples to note the color change.

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    • Test for different food samples and carefully observe the colour changes.

    • Make a note of indicator drops required for the colour change with different Vitamin C foods.

    • Find out the reactions happening with starch solution, Iodine and Vitamin C

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Suchitha Vishwa

Member since: 05/02/2017

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30 Guides authored

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