Standard electrode potential for Sn^{4+}\/Sn^{2+} couple is ...

CBSE Class 12 Chemistry 2025 All Sets Solved Paper

Question : 1 of 16

Marks: +1, -0

Standard electrode potential for

Sn^{4+}\/Sn^{2+}

couple is +0.15 V and that for the

Cr^{3+}\/Cr

couple is –0.74 V. The two couples in their standard states are connected to make a cell. The cell potential will be

Solution:

Cell notation

Cr | Cr^{3+}||Sn^{4+} | Sn^{2+}

{E^{0}}_{cell} = {E^{0}}_{Cr\/Cr^3+}+E_{Sn^{4+\/Sn^{2+}}}^{0}

= 0.74 + 0.15
= 0.89 V

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