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CHEMISTRY > Topic 12 > Flashcards

Topic 12 Flashcards

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1
Q

What is the purpose of adding sodium thiosulfate solution in the iodine clock reaction?

A

Reduces the iodine

Prevents starch reacting with the iodine until all the sodium thiosulfate has reacted

Prevents colour change of starch indicator

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2
Q

Outline a method for measuring iodine concentrations without sampling the mixture

What measurements​ would you make?

A

Colourimetry

Measure absorption at various times

Convert absorption into concentration

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CHEMISTRY (18 decks)

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