Which type of reaction occurs in the following?

2HgO (s) - - 2Hg (l) + O2 (g)

1. a decomposition reaction in which a metal is reduced

2. an acid-base neutralization reaction to produce oxygen gas a displacement

3. reaction involving two metals a combustion

4. reaction involving burning a metal in oxygen

Question

Chemistry

Deanna Fitzpatrick

24 September, 08:30

Which type of reaction occurs in the following?

2HgO (s) - - 2Hg (l) + O2 (g)

1. a decomposition reaction in which a metal is reduced

2. an acid-base neutralization reaction to produce oxygen gas a displacement

3. reaction involving two metals a combustion

4. reaction involving burning a metal in oxygen

+3

Answers (1)

Know the Answer?

Marcus Marshall · Answer 1

1. A decomposition reaction in which a metal ion is reduced

Explanation:

In a decomposition reaction, a single compound is converted into two or more simpler substances.

In this reaction, the oxidation number of Hg decreases from + 2 in HgO to 0 in Hg (reduction), so the mercury ion is reduced.

2 is wrong. There are no acids or bases on the reactant side of the equation.

3 is wrong. There are no metals on the reactant side of the equation.

4 is wrong. There is no oxygen on the reactant side of the equation.

Which type of reaction occurs in the following?2HgO (s) - - 2Hg (l) + O2 (g)1. a decomposition reaction in which a metal is reduced2. an acid-base neutralization reaction to produce oxygen gas a displacement3. reaction involving two metals a combustion4. reaction involving burning a metal in oxygen