Theoretical Yield of this reaction? We are doing a green salt synthesis. The sal

Question

Theoretical Yield of this reaction?

We are doing a green salt synthesis. The salt is potassium ferrioxalate, K3Fe(C2O4)3

I need to figure out the theoretical yield of the reaction, if 3.2 g ox ferric chloride and 12.0 g of potassium oxalate are used.

Thanks!!

Theoretical Yield of this reaction? We are doing a green salt synthesis. The salt is potassium ferrioxalate, K3Fe(C2O4)3 The equation is: FeCl3(aq) + 3K2C2O4 3H2O(s) + 3KCl(aq) I need to figure out the theoretical yield of the reaction, if 3.2 g ox ferric chloride and 12.0 g of potassium oxalate are used. Thanks!! H2O(l) rightarrow K3Fe(C2O4)3

Explanation / Answer

In this reaction, the water of crystalization can be excluded from the calculation, as the reaction is carried out in aqueous phase.

FeCl3 + 3K2C2O4 ---------> K3[Fe(C2O4)3] + 3KCl

Molar mass of FeCl3 = 162.2 g/mol; K2C2O4 = 166.2 g/mol and K3[Fe(C2O4)3] = 437.1 g/mol

mole of FeCl3 = 3.2/162.2 = 0.0197 mol

mole of K2C2O4 = 12.0/166.2 = 0.0722 mol

mole of K2C2O4, 0.0722 mol is greater than 3 times the mole of FeCl3 (0.0722 > 3*0.0197), suggesting that K2C2O4 is in molar excess. Therefore, the theoretical yield of potassium ferricoxalate is equal to mole of FeCl3 (Note: 1 mole of FeCl3 produces 1 mole of K3[Fe(C2O4)3]).

Theoretical yield of K3[Fe(C2O4)3] = 0.0197*437.1 = 8.6 g

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