Question

use the following information to answer the next question. reduction and oxidation statements i solid magnesium reacts to form mg2+ ions. ii tin metal forms stable ions by losing electrons. iii oxygen gas forms stable ions by gaining electrons. iv zinc metal is extracted from ore containing zns(s). v the oxidation number of sulfur changes from +2 to -2. vi the oxidation number of sulfur changes from +4 to +6. the statements numbered above that describe oxidation are: a. i, ii, and vi b. ii, iv, and v c. i, iv, and vi d. iii, iv, and v clear my choice

Explanation:

Step1: Define oxidation

Oxidation is the loss of electrons or an increase in oxidation number.

Step2: Analyze statement I

Magnesium forms $Mg^{2 +}$ by losing electrons. This is oxidation as it loses 2 electrons and its oxidation state changes from 0 to + 2.

Step3: Analyze statement II

Tin metal forms stable ions by losing electrons. Losing electrons is oxidation.

Step4: Analyze statement III

Oxygen gas gains electrons to form stable ions. Gaining electrons is reduction, not oxidation.

Step5: Analyze statement IV

Zinc extraction from $ZnS$ is a complex process not directly related to a simple oxidation - reduction definition in this context.

Step6: Analyze statement V

The oxidation number of sulfur changing from + 2 to - 2 is a decrease in oxidation number, which is reduction.

Step7: Analyze statement VI

The oxidation number of sulfur changing from + 4 to + 6 is an increase in oxidation number, which is oxidation.

Answer:

a. I, II, and VI