Gravametric Analysis Flashcards
What is gravimetric analysis?
Analysis by mass to find the mass of an analyte by producing a precipitate using precipitate reactions. There should be a mass of precipitate at the end of the experiment
Weigh ________ accurately
Sample
Dissolve ____ and ____ to remove any ______ and _____ solids.
Wash with _____ lots to ensure _____ transfer from all glassware and filter paper.
Discard _______
Dissolve sample and filter to move any excess and insoluble solids.
Wash with 20mL lots to ensure quantitative transfer from all glassware and filter paper.
Discard filter paper
React the ______ to produce a ______ of _________. Check to ensure all ______ have reacted by designing a reaction that ONLY the ________ react.
React the solution to produce a precipitate of desired ion. Check to ensure all desired ions have reacted by designing a reaction that ONLY the desired ions react.
By using _____ filtration you filter the ______ to separate the ______ from the ______.
Wash to ensure _________ transfer.
Wash precipitate to extract any ______ ions.
Check with _________
By using vacuum filtration you filter the precipitate to separate the precipitate from the solution.
Wash to ensure quantitative transfer.
Wash precipitate to extract any undesired ions
Check with AgNO3.
Dry _____ in oven and then _______ accurately.
After doing so you can work out the appropriate calculations.
Dry precipitate in oven and then weigh accurately.
After doing so you can complete the appropriate calculations
Solubility table
All nitrates, acetates (ethanoates), group 1 and ammonium compounds are soluble.
All chlorides, bromides and iodides are soluble except Ag and Pb compounds.
All sulfates are soluble except BaSO4, PbSO4.
All carbonate compounds are of low solubility except group 1 carbonates and (NH4)2CO3
All hydroxide compounds are of low solubility except group 1 hydroxides.
