Experimental work (8) Answers

IB Chemistry: Experimental work (8) Answers

8. (a) 1.0 cm3 of 0.010 I2(aq) is diluted 20 times to give a total volume of 20.0 cm3.Hence the concentration is one twentieth of the original concentration.0.010 ÷ 20 = 0.00050 mol dm-3. [1](b) I2(aq) is yellow but both the products containing iodine, I−(aq) and CH2ICOCH3(aq), are colourless [1](c) Zero order. When half the amount of iodine is placed in the reaction tube, the time taken for the colour of the iodine...

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