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You are titrating 25.025.0 mL of 0.0100 M Sn2 Sn2 in 1 M HCl HCl with 0.0500 M Tl3 Tl3 resulting in the formation of Sn4 Sn4 and Tl Tl . A PtPt indicator electrode and a saturated Ag|AgCl Ag|AgCl reference electrode are used to monitor the titration. What is the balanced titration reaction

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Answer:

SnĀ²āŗ + TlĀ³āŗ ā†’ Snā“āŗ + Tlāŗ

Explanation:

The SnĀ²āŗ is oxidized to Snā“āŗ. Whereas TlĀ³āŗ is reduced to Tlāŗ. The half-reactions are:

SnĀ²āŗ ā†’ 2eā» + Snā“āŗ (Oxidation, loosing electrons)

TlĀ³āŗ + 2eā» ā†’Tlāŗ (Reduction, gaining electrons)

The sum of the reactions gives:

SnĀ²āŗ + TlĀ³āŗ + 2eā» ā†’ 2eā» + Snā“āŗ + Tlāŗ

Subtracting the electrons in both sides of the reaction:

SnĀ²āŗ + TlĀ³āŗ ā†’ Snā“āŗ + Tlāŗ

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