Under what conditions will a galvanic cell send no current in outer circuit?

if the resistance of the outer circuit is very high or if the circuit is open then the galvanic cell won’t send any current into the outer circuit.

Why does a galvanic cell stop working?

In a galvanic cell, the transfer of electrons from anode to cathode leads to a net positive charge around the anode and a net negative charge around the cathode. The positive charge around anode prevents electrons to flow out from it so the potential difference becomes zero and the cell stops after sometime.

What is the most important condition for a galvanic cell?

Salt bridge is used to connect the two half cell to complete the circuit.

Why does the current of a galvanic cell decrease with time?

Over time, Q→K , whether Q>K or Qdecreases until Ecell=0 at equilibrium. It also follows that ΔG increases until ΔG=0 at equilibrium.

Why does galvanic cell dead after sometime?

A second reason is that the substance in the salt bridge or your electrolyte may have a level too low to allow for movement of ions. A third reason that a galvanic cell may go dead is that the waste products may accumulate to such a degree that charges can no longer move.

What is happening in galvanic cell?

In a galvanic cell, when an electrode is exposed to the electrolyte at the electrode-electrolyte interface, the atoms of the metal electrode have a tendency to generate ions in the electrolyte solution leaving behind the electrons at the electrode. Thus, making the metal electrode negatively charged.

Where do electrons flow in a galvanic cell?

anode
Electrons always flow from the anode to the cathode or from the oxidation half cell to the reduction half cell. In terms of Eocell of the half reactions, the electrons will flow from the more negative half reaction to the more positive half reaction.

What happens when a galvanic cell reaches equilibrium?

When the reaction is at equilibrium, there is no net change in the amount of zinc metal or copper ions in the system, so no electrons flow from the anode to the cathode. If there is no longer a net flow of electrons, the cell can no longer do electrical work. Its potential for doing work must therefore be zero.

How does concentration affect galvanic cells?

In an electrochemical cell, increasing the concentration of reactants will increase the voltage difference, as you have indicated. A higher concentration of reactant allows more reactions in the forward direction so it reacts faster, and the result is observed as a higher voltage.

What happens when a galvanic cell dies?

When this galvanic cell is discharging, the electrons flow from zinc to copper. As zinc metal loses electrons, Zn becomes Zn2+ , which goes into solution. Our galvanic cell basically goes dead when all of the Zn(s) becomes Zn2+(aq) , and there are no more electrons left to flow from the anode to cathode.