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How many Faradays are required to reduce all the chromium in 0.150L of 0.115 M of `Cr_(2)O_(7)^(2-)` to `Cr^(2+)`?

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How many Faradays are required to reduce all the chromium in 0.150L of 0.115 M of `Cr_(2)O_(7)^(2-)` to `Cr^(2+)`?
A. 0.920F
B. 0.690F
C. 0.138F
D. 0.069F
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Correct Answer - C
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