Edexcel Jun 2017 Paper 2 Q1

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SECTION A Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on . and then mark your new answer with this section. For each question, select one answer from A to D and put a cross in the box If you change your mind, put a line through the box . a cross D O N O T W R I T E I N T H I S A R E A (Total for Question 1 = 1 mark) D O N O T W R I T E I 1 Which molecule is polar? A BeC l2 B CO 2 C CH D H 2S 2 Which is not a disproportionation reaction? A 3ClO(cid:111) 2Cl + ClO3I2 + 5O3 + H2O (cid:111) 2HIO3 + 5O2 C Br 2 + 2OH I2 + H2O (cid:111) BrO + Br + H2O (cid:111) HI + HIO 3 Two layers form when the non-polar solvent cyclohexane (density 0.78 g cm3) is mixed with a dilute solution of aqueous iodine (density 1.03 g cm3) and left to stand. The colours of the layers are (Total for Question 2 = 1 mark) Lower layer Upper layer purple brown yellow brown brown black purple yellow (Total for Question 3 = 1 mark) *P53493A0220* N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br />

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