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. Does not significantly affect % yield Increases % yield Decreases % yield Copper suitate solution does not react fully in the first step, too much distilled water is added and the total volume is over 100 mL with zinc metal Excess zinc doesn't fully react with sulfuric acid before copper metal is filtered When decanting the fuid off the solid Cuo When the bunsen burner it set up, t is 9 am some Cuo solid is poured out away from the beaker inslead of 6-8 cm Copper metal is sill damp when weighed The precisely measured Cu(NOhz solution is spilled before it is added to the 250 mL beaker in the first step The soluton is heaterd sighily more than 1 minute over the bunsen burner

Explanation / Answer

All the options are correct as given under each head:

Increases % yield

Excess zinc does not fully react with sulfuric acid before copper metal is filtered.

Copper metal is still damp when weighed

Decreases % yield

Copper sulfate solution does not fully react with zinc metal

When decanting the fluid off the CuO some CuO solid is poured out

The precisely measured Cu(NO3)2 solution is spilled before it is added to the 250 mL beaker in the first step

Does not significantly affect % yield

In the first step, too much distilled water is added and the total volume is over 100 mL

When the bunsen burner is setup 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

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.