Edexcel IGCSE Chemistry
Showing posts with label
half equations
.
Show all posts
Showing posts with label
half equations
.
Show all posts
Thursday, 16 May 2013
1.55 write ionic half-equations representing the reactions at the electrodes during electrolysis
Half equations
Half equations are written to show the chemical activity at the electrodes.
They need to be balanced for an exam
On the equations below, the first one is not balanced and the second has been.
Al
3+
+ e
–
→ Al
Al
3+
+ 3e
–
→ Al
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