(Solved): This experiment takes copper through a series of reactions, circling back to copper once more at t ...

This experiment takes copper through a series of reactions, circling back to copper once more at the end \( -- \) a copper cycle. What result can be used to best determine the efficiency of the cycle? The amount of nitrogen dioxide gas evolved The amount of zinc needed to precipitate copper The \( \mathrm{pH} \) of the copper hydroxide solution The percent recovery of the starting material (Copper) must be handled with care can be neutralized by baking soda can cause severe burns and ruin clothes can give off dangerous fumes When sulfuric acid is used to dissolve excess zinc in the final step, the bubbles that form are water vapor hydrogen gas nitrogen gas calcium hydroxide A student measures \( 0.395 \) of copper. At the end of the cycle, \( 0.373 \) of copper is recovered. What is the percent recovery for the cycle? If the student in question obtained a \( 103.5 \% \) recovery of copper, what is the most likely to be true? The student used too much nitric acid The student lost copper oxide during the transfer operation The student is a super-chemist The copper was not completely dry