What role does the salt bridge play in a voltaic cell?
it allows electrons to flow from the anode to the cathode.
it allows migration of ions from one half–cell to the other.
it contains the electrodes.
it creates the oxidation reaction.
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Ответ:
Option (b) is the correct answer.
Explanation:
A salt bridge is a device which helps in maintaining electrical neutrality between the solution at both ends of cathode and anode.
Basically, a salt bridge helps in migration of ions in oxidation-reduction half reactions occurring at anode and cathode.
Thus, we can conclude that role of a salt bridge in a voltaic cell is that it allows migration of ions from one half–cell to the other.
Ответ: