Manganese(IV) oxide is reduced to manganese(II) oxide by hydrogen gas. Include all phases in answer
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The cell potential is 0.01934 V at 25°C.
<h3>What is a galvanic cell?</h3>A galvanic cell, also known as a voltaic cell, is an electrochemical cell that converts the chemical energy generated by spontaneous redox reactions into electrical energy.
The main components of a galvanic cell are
Anode – Oxidation occurs at the anode
Cathode – Reduction occurs at the cathode
Salt bridge – consists of electrolytes that are needed to complete the circuit in a galvanic cell.
Half-cells – It is important as reduction and oxidation reactions are separated into compartments.
External circuit – it helps in Conducting the flow of electrons between electrodes
At cathode,
At anode,
Overall cell reaction
= -0.40 -(0.44) = 0.04 V
Nernst equation is given by
At 25°C
Here, n = 2 and log Q = log = 0.699
= 0.01934 V
The cell potential is 0.01934 V at 25°C
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