Cathodes and Anodes in Galvanic vs Electrolytic Cells

310 views

Why do Cathodes carry a positive charge and Anodes carry a negative charge in galvanic cells, but in electrolytic cells, Cathodes have a negative charge and Anodes have a positive charge? I’m a grade 12 chemistry student and I’m having trouble understanding this concept. Could someone please explain the rationale behind this apparent reversal of charges in the two types of cells?

In: 33

6 Answers

Anonymous 0 Comments

In a galvanic cell you are connecting two metals with a wire and letting them react with each other, producing electricity. The amount of electricity *produced* depends on which two metals you connect.
In an electrolytic cell you are APPLYING electricity to *force* the reaction to run in the opposite direction. The amount of electricity *required* depends on which two metals you connect.

You are viewing 1 out of 6 answers, click here to view all answers.