Empirical evidence for H2O2(l)+Cu2+(aq)→Cu(s)+O2(g)+2H+(aq) ?

Empirical Evidence

1.) gas produced that will relight a glowing splint

2.) gas produced that will cause a lit splint to "pop"

3.) increase in pH

4.) decrease in pH

5.) solid metal is produced

6.) solid metal reacts

7.) blue colour fades

8.) blue colour forms

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  • 3 months ago
    Best answer

    H2O2(l) + Cu{2+}(aq) → Cu(s) + O2(g) + 2 H{+}(aq)

    1.) gas produced that will relight a glowing splint Yes, because that is the test for oxygen gas which is one of your products.

    2.) gas produced that will cause a lit splint to "pop" No, that is the test for hydrogen gas, which is not produced in this reaction.

    3.) increase in pH No, your equation produces H{+} (acid) ions, which cause the pH to decrease.

    4.) decrease in pH Yes. (see 3.)

    5.) solid metal is produced Yes, your equation shows Cu(s), which is a metal, among the products.

    6.) solid metal reacts No, there is no solid metal among the reactants.

    7.) blue colour fades Yes, the reactant Cu{2+}(aq) is blue. There is nothing blue among the products.

    8.) blue colour forms No. (see 7.)

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