The volume in mL of 002 M K2Cr2O7 solution required to react

Question

The volume, in mL, of 0.02 M K_(2)Cr_(2)O_(7) solution required to react with 0.288 g of ferrous oxalate in acidic medium is _______. (Molar mass of Fe = 56 g mol^(–1))

DivineJEE · Accepted Answer

K_(2)Cr_(2)O_(7) + FeC_(2)O_(4) -> Cr^(+3) + Fe^(+3) + CO_(2) n_(factor) of K_(2)Cr_(2)O_(7) = 3 x 2 = 6 n_(factor) of FeC_(2)O_(4) = 1 + 2 = 3 m. eq. of K_(2)Cr_(2)O_(7) = m. eq. of FeC_(2)O_(4) => 6 x 0.02 x vol / 1000 = 0.288 / 144 x 3 => vol = 50 ml

Explanation

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