Lab 11: Separating and Recovering the Components of a Ternary Mixture Interpreta

Question

Lab 11: Separating and Recovering the Components of a Ternary Mixture Interpretation of Your Results use the spaces provided for the answers and additional paper if necessary. 1. In Step 16 of the Procedure, (a) you separated solid sio by decanting the supernatant liquid. Provide an alternative method for this separation. (b) you washed the solid three times. Briefly explain why three washings were used. 2. If your total percent recovery is not 100%, (a) speculate which of the components was the most difficult to separate and recover. Briefly explain. (b) explain any discrepancies between your two determinations

Explanation / Answer

1. a) The SiO2 can be separated also by filtration through cintered funnel rather than decanting the supernatant liquid.

1.b) As in SiO2 sample may contain residual HCl acid which is corrosive and tauxic, three time wash with water is highly recommended to ensure there is no residual acid.

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