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A student treated 15 g of copper(II) oxide with excess hydrochloric acid and purified the copper(II) chloride product by crystallization. The final mass of pure copper(II) chloride was 11 g. What was the percentage yield?
Sodium nitrate was dissolved in water at to produce a saturated solution. The solution was filtered to remove undissolved solid, then cooled to to precipitate the sodium nitrate. The solubilities of sodium nitrate at 80 and are 148 g/L and 73 g/L, respectively. Calculate the percentage yield for this recrystallization method.
What is the formula for calculating the percentage yield from the actual yield and the theoretical yield?
Reaction of 1.274 g of aqueous copper sulfate with excess zinc metal produced 0.392 g of copper metal according to the equation:
Calculate to 2 significant figures the percentage yield of this reaction.
A student is electroplating an electrode using copper sulfate solution. Based on the current measured during the experiment, the electrode should be coated with 12.2 g of copper. However, the electrode is only coated with 10.4 g of copper. What is the percentage yield of the electroplating process?
In an attempt to make calcium oxide, a student heats 100.0 g of calcium carbonate and weighs the remaining solid material. The final mass is 62.3 g. What is the percentage yield of calcium oxide?