Question

calculate the mass of oxalic acid which is required to be added completely with 31.6g of kmno4. Also calculate volume of co2 produced at STP.​

Answer 1

Answer:

No

But I expect the mass to be around 30−40 g, because around 2 g is needed for a 0.05 Msolution in a 200 mL flask, if I remember correctly.

Since we want 250 mL of 1 M H2C2O4(aq), we want

1.00 mol H2C2O41 L soln×0.250L soln=0.250 mols H2C2O4

But for every one H2C2O4, there is one H2C2O4⋅2H2O, so we need 0.250 mols of specifically H2C2O4⋅2H2O that is added to some water and then filled up to the 250 mLmark on a volumetric flask.

Therefore, the mass needed is:

0.250mols H2C2O

Explanation:

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