Question

Match the correct answers.

Here are the choices

single displacement reaction and copper is more active than zinc solid copper

does not directly react with sulfuric acid, some form of oxidant is needed

solid copper and nitric acid react to form a toxic nitrogen dioxide gas.

Single displacement reaction and zinc is more active than copper

Any strong acid should do

It rinses water away leaving the solid copper with less water in it

Acetone decreases the insolubility of copper and is therefore used to keep the copper a solid.

Here are the questions

In the Copper Cycle, why did the addition of Zn (s) cause Cu2+ ions to form Cu (s)?

In the Copper Cycle experiment, we added aqueous HCl to the reaction mixture to remove the Zn(s).

Why was it necessary to use HCl rather than another acid, such as HNO3?

What does the acetone do in the wash of the copper cycle?

Why couldn't you use 3M H2SO4 for concentrated HNO3 in part I?

Answer 1