1.

Both Cr_(2)O_(7)^(2-) and MnO_(4)^(-) solutions can be used to titrate Fe^(2+) in acidic medium. Suppose you have (0.1 M solution of each). For a given sample of Fe^(2+) solution. If a given titration requires -7.5 mL of 0.1 m Cr_(2)O_(7)^(2-) o solution, how many mL of 0.1 M MnO_(4), would have been if it had been used instead.

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