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How can someone determine heat energy released during an electrochemical reaction?

Let's assume a simple galvanic cell at standard environment: Zn(s) -> Zn2+(aq) || Cu2+(aq) -> Cu(s)

$$\ce{Zn(s) -> Zn^2+(aq) || Cu^2+(aq) -> Cu(s)}$$

Electrical energy can be derived from the electrode potential and electron flow, but how the heat release can be calculated? What's the heat release when Zn(s)$$\ce{Zn(s)}$$ gets solvated to ZnSO4(aq)$$\ce{ZnSO4(aq)}$$, and whats the heat release when Cu2+$$\ce{Cu^2+}$$ ions gets plated to the electrode?

I'm using term "heat release", because I get confused about the enthalpy in electrochemical cells, since some of enthalpy seems to be connected to electrical work as well.

Thank you in advance!

How can someone determine heat energy released during an electrochemical reaction?

Let's assume a simple galvanic cell at standard environment: Zn(s) -> Zn2+(aq) || Cu2+(aq) -> Cu(s)

Electrical energy can be derived from the electrode potential and electron flow, but how the heat release can be calculated? What's the heat release when Zn(s) gets solvated to ZnSO4(aq), and whats the heat release when Cu2+ ions gets plated to the electrode?

I'm using term "heat release", because I get confused about the enthalpy in electrochemical cells, since some of enthalpy seems to be connected to electrical work as well.

Thank you in advance!

How can someone determine heat energy released during an electrochemical reaction?

Let's assume a simple galvanic cell at standard environment:

$$\ce{Zn(s) -> Zn^2+(aq) || Cu^2+(aq) -> Cu(s)}$$

Electrical energy can be derived from the electrode potential and electron flow, but how the heat release can be calculated? What's the heat release when $$\ce{Zn(s)}$$ gets solvated to $$\ce{ZnSO4(aq)}$$, and whats the heat release when $$\ce{Cu^2+}$$ ions gets plated to the electrode?

I'm using term "heat release", because I get confused about the enthalpy in electrochemical cells, since some of enthalpy seems to be connected to electrical work as well.

Bumped by Community user
1

# Heat energy vs. electrical energy in a galvanic cell or in an electrochemical reaction

How can someone determine heat energy released during an electrochemical reaction?

Let's assume a simple galvanic cell at standard environment: Zn(s) -> Zn2+(aq) || Cu2+(aq) -> Cu(s)

Electrical energy can be derived from the electrode potential and electron flow, but how the heat release can be calculated? What's the heat release when Zn(s) gets solvated to ZnSO4(aq), and whats the heat release when Cu2+ ions gets plated to the electrode?

I'm using term "heat release", because I get confused about the enthalpy in electrochemical cells, since some of enthalpy seems to be connected to electrical work as well.

Thank you in advance!