Question

6. Cu metal generated What is removed by the final three washing steps and why? a) washing with water: b) washing with ethanol: c) washing with acetone: What color is the recovered copper?

Answer 1

- 4 Cuo(s) + 2HClaq) - Culla laq) + H2O (1) net ionic equation Cu Ou) + 2Hopt 2007aq) - Cuiacht 2u caq.) + H206) Obserwation: turned blue Reaction type: Double - displacement neaction Neutralization reaction After reaction is complete it consists of aq culla Pie, Cuct and ci in H₂O. 5. O mg (s) + Cully (aq;) 77 Culs) ting Uly cap:) img in) + 2HU (aq) ~ Hz (g) + MgCl₂ (aq) Net ionic reaction) i) Mgca) + Cu? + 241 (01) – Cu(s) + Mzj 4 Cap.) +2c1b47 by Mg(s) + 24° (aq;)+ 2ucaz:) H(g)+ Mzj 9 cap:) +2cícaq.) Obsow atien i) Color chariges fuem brorun to lignt - blue and then should turn colorless because Cull, anhydrous) is broum, when hydrated turns blue and when reaction will occur, Mg Cl forms and colour will disappear. copper will settie down gives a pop sound on in) as is evolved which csº sumingit

- Type of Reaction : i) Mg(s) + Cuclzlag) – Cucs) + Mgu, caz) Single Replacement Displacement Reaction in) mg + 2HCl cap.) → MgQz + H2(g) Single Replacement | Ausplacement Readion Scanned with CamScanner