Edexcel Jan 2017 (IAL) Paper 1 Q16

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16 How many moles of ions are present in 30 cm3 of 0.025 mol dm3 barium hydroxide solution, Ba(OH)2(aq)? A 0.00075 B 0.00150 C 0.00225 D 0.00450 A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D 17 When 1.270 g of copper (Ar = 63.5) is added to excess silver nitrate solution, 4.316 g of silver (Ar = 107.9) forms. (Total for Question 16 = 1 mark) The ionic equation for the reaction is: A Cu(s) + 2Ag+(aq) (cid:111)(cid:3)Cu2+(aq) + 2Ag(s) B 2Cu(s) + Ag2+(aq) (cid:111)(cid:3)2Cu+(aq) + Ag(s) C Cu(s) + Ag2+(aq) (cid:111)(cid:3)Cu2+(aq) + Ag(s) D Cu(s) + Ag+(aq) (cid:111)(cid:3)Cu+(aq) + Ag(s) (Total for Question 17 = 1 mark) 18 The process with the highest atom economy is the production of A propene by cracking eicosane, C20H42. B 1-chloropropane from propane and chlorine. C cyclohexene by reforming hexane. D poly(propene) by polymerising propene. Use this space for any rough working. Anything you write in this space will gain no credit. (Total for Question 18 = 1 mark) A E R A S I H T N I E T I R W T O N O D *P48367A0724* Turn over<br />

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