what does the expression diveting a percipitate mens PRE-LAB QUESTIONS What does
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what does the expression diveting a percipitate mens PRE-LAB QUESTIONS What does the expression,"digesting a precipitate" mean? 2. Describe how to test the filtrate for the presence of excess K 3. What mass of potassium ferrocyanide trihydrate was in the o 4. What was the mass of cobalt(I) chloride hexahydrate in the or l. Help Sheet? (Answer 1) Help Sheet? (Answer 2) 5. What are the percentages of the two components in the original 6. What mass of cobalt(II) chloride hexahydrate was used in the read mass of cobalt(ll) chloride hexahydrate was left over after the r some of the K CoFe(CN)H2O is lost in the filtering process, wou Help Sheet? (Answers 3 and 4) Sheet? Sheet? nigher or lower than the actual amount in the salt mixture? Explain.Explanation / Answer
Often there are unwanted ions trapped within the solid precipitate especially when the precipitate is crystalline. It is difficult to remove these when they are non volatile. Thus digestion is carries out to get a purer precipitate .In this process the precipitate is redissolved in a volatile solvent and heated up .The solid precipitate is in dynamic equilibrium and will thus go from solid to solution state and then cycle back to solid state again. The solution is them cooled and formed precipitate is separated out.
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