Question 1

Which type of chemical reaction is represented by the equation $$\mathrm{S(s) + O_2$(g) \rightarrow SO_2$(g)}$$?

Accepted Answer

Synthesis reaction

Question 2

What is the oxidation state of sulfur in $$\mathrm{SO_2$}$$?

Accepted Answer

$$+4$$

Question 3

In the reaction $$\mathrm{S(s) + O_2$(g) \rightarrow SO_2$(g)}$$, which element is oxidized?

Accepted Answer

Sulfur

Question 4

According to the oxidation state rules, what is the oxidation state of oxygen in $$\mathrm{SO_2$}$$?

Accepted Answer

$$-2$$

Question 5

Which of the following best describes the role of $$\mathrm{O_2$} in $$the reaction $$\mathrm{S(s) + O_2$(g) \rightarrow SO_2$(g)}$$?

Accepted Answer

Oxidizing agent

Question 6

If the oxidation state of sulfur in $$\mathrm{S(s)} is$$ $$0$$ and in $$\mathrm{SO_2$} is$$ $$+4$$, how many electrons are lost by each sulfur atom during the reaction?

Accepted Answer

4 electrons

Question 7

Which of the following is the correct balanced equation for the combustion of sulfur in oxygen?

Accepted Answer

$$\mathrm{S(s) + O_2$(g) \rightarrow SO_2$(g)}$$

Question 8

Which nonmetal always has an oxidation state of $$-1 in $$its compounds, according to the table provided?

Accepted Answer

Fluorine

Question 9

In the reaction $$\mathrm{S(s) + O_2$(g) \rightarrow SO_2$(g)}$$, what is the sum of the oxidation states of all atoms in $$\mathrm{SO_2$}$$?

Accepted Answer

$$0$$

Question 10

Which of the following statements is true regarding the oxidation state of hydrogen in most compounds?

Accepted Answer

Hydrogen usually has an oxidation state of $$+1$$

lecture 5, ns) Chemical Reactions and Redox Reactions: General Chemistry Study Notes

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