Suppose a powerful battery is connected between a pair of inert graphite electrodes dipped into a pot of molten magnesium chloride (MgCl₂) (see sketch at right). The battery makes a current of electrons flow in the directions shown by the arrows in the sketch. Note: Group 14 and Group 24 metals all melt at temperatures lower than their salts. Which electrode is the cathode? Write a balanced equation for the half-reaction that takes place at electrode A. Write a balanced equation for the overall reaction. 0 0 A B ローロ la X 2 4 C A 7° B

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Suppose a powerful battery is connected between a pair of inert graphite electrodes dipped into a pot of molten magnesium
chloride (MgCl₂) (see sketch at right).
The battery makes a current of electrons flow in the directions shown by the arrows in the sketch.
Note: Group 1A and Group 2A metals all melt at temperatures lower than their salts.
Which electrode is the cathode?
Write a balanced equation for
the half-reaction that takes
place at electrode A.
Write a balanced equation for
the overall reaction.
A
B
x
?
A
D
B
Transcribed Image Text:Suppose a powerful battery is connected between a pair of inert graphite electrodes dipped into a pot of molten magnesium chloride (MgCl₂) (see sketch at right). The battery makes a current of electrons flow in the directions shown by the arrows in the sketch. Note: Group 1A and Group 2A metals all melt at temperatures lower than their salts. Which electrode is the cathode? Write a balanced equation for the half-reaction that takes place at electrode A. Write a balanced equation for the overall reaction. A B x ? A D B
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