Categorize each action below as increasing or decreasing the calculated value of

Question

Categorize each action below as increasing or decreasing the calculated value of the percent yield for copper collected at the end of a copper cycle experiment. Excess zinc doesn't fully react with sulfuric acid before copper metal is filtered In the first step, too much distilled water is added and the total volume is over 100 mL Copper sulfate solution does not react fully with zinc metal Copper metal is still damp when weighed When decanting the fluid off the solid CuO some CuO solid is poured out. When the Bunsen burner it set up, it is 9 cm away from the beaker instead of 6-8 cm The solution is heated slightly more than 1 minute over the Bunsen burner The precisely measured Cu(NO_3)_2 solution is spilled before it is added to the 250 mL beaker in the first step

Explanation / Answer

Increase % yield: Copper metal is still damp when weighed

Decrease % yield: When decanting the fluid off solid CuO, some CuO is poured out; The precisely measured Cu(NO3)2 solution is spilled; Copper sulfate solution does not react fully with zinc metal

Does not significantly affect % yield: In the first step, too much distilled water is added; when th ebunsen burner is set up, it is 9 cm away from the beaker instead of 6-8 cm; The solution is heated slightly more than i minute ove rthe bunsen flame; excess zinc doesn't react fully with sulfuric acid.

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