Electrolysis of Copper Chloride Solution. What is a solution?

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Presentation transcript:

Electrolysis of Copper Chloride Solution

What is a solution?

Copper(II) Chloride solution CuCl ₂

What happening here

At the negative electrode: copper (II) ions (Cu 2+ ) are attracted to the negative electrode the blue Cu 2+ ions are forced to accept two electrons the ion-electron half equations for this reaction is: Cu 2+ (aq) + 2e - → Cu(s)

At the positive electrode: colourless chloride ions (Cl - ) are attracted to the positive electrode the chloride ions are forced to give away their extra electron to form chlorine atoms the chlorine atoms join up in pairs to form diatomic chlorine gas (Cl 2 ) The ion-electron half equation for this reaction is: 2Cl - (aq) → Cl 2 (g) + 2e -

The products of this electrolysis are: copper metal at the negative electrode The copper forms as a brown solid on the negative electrode. chlorine gas (Cl 2 ) at the positive electrode The chlorine appears as a gas with a characteristic smell at the positive electrode.