IGCSE CHEMISTRY HELPP neededd

[jason234]

Q2 B and C

B) Write an equation for the reaction that takes place at the positive electrode.

C) Write an equation for the reaction that takes place at the negative electrode.

 

[Doctor Nemo]

Q2 B and C

B) Write an equation for the reaction that takes place at the positive electrode.

C) Write an equation for the reaction that takes place at the negative electrode.

View attachment 3812View attachment 3812

Electrons always move to the positive terminal of the battery and away from the negative terminal of the battery. In electrolysis you are pulling electrons from the positive electrode and pushing them onto the negative electrode. Once you remember this basic principle the equations follow.

At the positive electrode

Ag (s) ----> Ag+ (aq) + e-

at the negative elecrode

Ag+ (aq) + e- ----> Ag (s)