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the amount of K2Cr2O7 required to prepare 100ml of its 0.05N solution

  • chemistry - ,

    Technically one cannot calculate a normality without knowing the reaction.
    USUALLY K2Cr2O7 goes to 2Cr^3+.
    So equivalent weight K2Cr2O7 = molar mass/6 = 294.18/6 = 49.03. I don't expect you will have seen this equation but keep it in mind; it can help you many times in the future.
    mL x N x milliequivalent weight = grams.
    You know mL, N, and mew; solve for grams.

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