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Colour changes with indicators in titration watch

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    http://qualifications.pearson.com/co...e_20120307.pdf

    For Q20c) why is it yellow before the starch is added?
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    (Original post by indignation)
    http://qualifications.pearson.com/co...e_20120307.pdf

    For Q20c) why is it yellow before the starch is added?
    Because a weak solution of iodine in water is yellow ...
 
 
 
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