Notes on Evaluative task

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Oxalic Acid

Molecular Formula is - C2H2O4

Name; ethanedioic acid, Carboxylic acid

Reducing agent-- it oxidises

Salt is Oxalate AND Molecular Formula= C2O42-

C2H2O4====> 2CO2+2H^+ + 2e-

Typically it is C2H204. 2 H20 X IS 2 for the dihydrate

Pottasium maganate is reduced

MnO4- (+) 8H^+ (+) 5e- ====> Mn^2+ (+) 4H20

Mn is reduced from +7 to +2.

Procedural Errors: Large percentage error using the weighing scale and also it is only repeated once.

Overall Equation for Pottasium Maganate and Oxalic acid

5C2H2O4 + 2MNO4- +6H^+ =====> 10CO2+ 2Mn^2+ 8H20

Percentage error (uncertain/ Volume measured) *100

For buretter times the error by 2.

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