Indicate whether the erroro introduced by each of the following problems would result in a high or low value for Cu recovery, or would not affect the resuits? C. $*$ some of the copper nitrate solution is splashed out of the beaker in part 1. B. $*$ insufficent $\mathrm{NaOH}$ is added in Part 2 B. * the solutions bumps, in Part 3, splashing out some CuO B. * some solid is lost in the decanting process A. would not affect the recovery of $\mathrm{Cu}$ $A . \neq$ adding excess $\mathrm{H}_{2} \mathrm{SO}_{4}$ in part 4 B. Iow value for cu recovery C. : some unreacted zinc remains with the product at the end of the exerpiment c, high value for cu recovery the washings in part 5 are insufficent to remove all of the solution residues from C. $*$ copper C. the copper is not completely dried

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