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18-10-2022
Chemistry

Answered

The composition of a hydrated potassium-salt of a yttrium(III)-oxalate complex ion conforms to the general formula:

KxY2(C2O4)7·wH2O
A 0.2865-g sample of this compound required 24.72 mL of 0.02388 M KMnO4 solution for the titration of all of the oxalate.

Calculate the number of moles (mol) of oxalate in this sample.
Calculate the number of moles of oxalate per gram (mol/g) of the compound.
Calculate the molar mass of the compound.
What is the value of x?
What is the value of w?

Answer :

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