A galvanic cell consists of a Cr3+/Cr half-cell with unknown [Cr3+] and a Ni2+/Ni halfcell with [Ni2+] = 1.20 M. The electromotive force of the cell at 25 °C was measured to be 0.55 V. What is the concentration of Cr3+ in the Cr3+/Cr half-cell?

A galvanic cell consists of a Cr3+/Cr half-cell with unknown [Cr3+] an

1.	A galvanic cell consists of a Cr3+/Cr half-cell with unknown [Cr3+] and a Ni2+/Ni halfcell with [Ni2+] = 1.20 M. The electromotive force of the cell at 25 °C was measured to be 0.55 V. What is the concentration of Cr3+ in the Cr3+/Cr half-cell?
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