Limiting Reactant: I have a total of 7 question and have 2 done so far but i need help on the rest.?

Posted on 2015-10-06 06:41:00 in Chemistry by ELIZABETH

1) Because of the porosity of the filter paper some of the CaC2O4 precipitate passes through the filter paper. will the reported percent of the limiting reactant in the original salt mixture be reported too high or too low? Explain.

2) Excessive quantities of wash water are added to the CaC2O4 precipitate. will the mass of the CaC2O4 be reported too high or too low? Explain.

3) the CaC2O4 precipitate is not completely air-dried when its mass is determined. will the reported mass of the limiting reactant in the original salt mixture be reported too high or too low? Explain.

4) the drying oven, although, thought ( and assumed) to be set at 125 Degree Celsius, had an inside temperature of 84 degree celsius. how will this error affect the reported percent by mass of the limiting reactant in the salt mixture... to high, too low, or unaffected? Explain.

5) a reagent bottle on the shelf labeled 0.5 M NaCl was used in place of 0.5 M CaCl2. assuming C2O4^2- to be in excess, what would be observed as a result of using this wrong reagent in this test? Explain.

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