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Chemistry, 08.12.2020 15:30 lwammes

8.769 of impure sample containing H2C2O4(s) was dissolved completely in 250 cm3 of distilled
water to form a solution . 25.0cm3 of this
Solution was pipetted out in a conical flask
and titrated with 0.0650 moldm^-3 acidified
K2Cr2O7(aq). 31.80 cm ^3 of K2Cr2O7(aq) was
used . Calculate the percentage purity of
the sample.

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w...

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