Question

Complete the picture diagram and chemical equation = Mg(s) = CuCl2 (20) LM8s + CuCl2) O) Note: Water molecules have been omitted for picture diagram clarity Observations: Mg ribbon is a solid white substance (a 2cm long ribbon), and Cuci, is a pale blue solution. After 30 seconds of placing Mg ribbon in CuCl, solution, the Mg surface started appearing rough pitted. After about 2 minutes, the pale blue solution started fading and black flakes formed at the surface of the Mg ribbon, which settled down at the bottom of the container. INSTRUCTIONS: WORK AS A PAIR/TABLE GROUP. WRITE OUT A MOLECULAR, IONIC AND NET TONIC CHEMICAL EQUATION (in that order). Relate the ionic equation to the components in the picture and complete the picture diagram. Remember to obey the law of conservation of mass. Also remember that a balanced chemical equation contains the smallest possible whole number coefficients for reactants and products.

Answer 1

It is single displacement reaction in which Mg replace Cu.

Molecular equation :

Mg(s) + CuCl_​​​2(aq) -> Cu(s) + MgCl ₂(aq)

Complete Ionic equation :

Mg(s) + Cu ²⁺(aq) + 2Cl^-(aq) -> Cu(s) + Mg ²⁺(aq) + 2Cl^-(aq)

Net ionic equation :

Mg(s) + Cu ²⁺(aq) -> Cu(s) + Mg ²⁺(aq)

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