Edexcel Jun 2017 Paper 5 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 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 . cross and then mark your new answer with a 1 Which species contains an element with the same oxidation number as vanadium has in NH4VO3? D O N O T W R I T E I N T H I S A R E A [A lH4] B K 2MnO4 C NaClO 3 [Fe(CN) 6]4 (Total for Question 1 = 1 mark) 2 Which of the following is not a disproportionation reaction? A 2NaHCO 3 (cid:111) Na2CO3 + CO2 + H2O B 6KOH + 3I 2 (cid:111) KIO3 + 5KI + 3H2O C 2H D 2Cu 2O2 (cid:111) 2H2O + O2 I (cid:111) CuI2 + Cu (Total for Question 2 = 1 mark) 3 The half-equation of a standard half-cell containing Zn2+(aq) | Zn(s) is Zn2+(aq) + 2e (cid:85) Zn(s) E = 0.76 V This is connected to a standard hydrogen electrode in a circuit and a current flows. At the zinc electrode A zinc atoms are reduced. B zinc ions are reduced. C zinc atoms are oxidized. D zinc ions are oxidized. (Total for Question 3 = 1 mark) *P48070A0228* D O N O T W R I T E I 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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