Types of Reactions

Question 1

What are the oxidation numbers of the atoms in this reaction?Check all that apply.Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

Revolt · Accepted Answer

0 for Mg(s) and H in H2; +1 for H in HCl; -1 for Cl in HCl; +2 for Mg in MgCl2

Question 2

The loss of electrons is called

Revolt · Accepted Answer

oxidation.

Question 3

What are the oxidation numbers of the atoms in this reaction?Check all that apply.CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

Revolt · Accepted Answer

-4 for C in CH4; +4 for C in CO2; +1 for H in both CH4 and H2O

Question 4

Use the drop-down menus to complete the sentences. The gain of electrons is called

Revolt · Accepted Answer

reduction.

Question 5

Cu2+ + e− → Cu+Cu2+ is

Revolt · Accepted Answer

reduced.

Question 6

Fe → Fe3+ + 3e−Fe is

Revolt · Accepted Answer

oxidized.

Question 7

Describe the redox reaction. Check all that apply. 2Na(s) + Cl2(g) → 2NaCl(s)

Revolt · Accepted Answer

Sodium atoms are oxidized.; Sodium transfers electrons to chlorine.

Question 8

Which reactions are oxidation-reduction reactions? Check all that apply.

Revolt · Accepted Answer

2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g); Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

Question 9

F + e− → F−F− is

Revolt · Accepted Answer

reduced.

Types of Reactions Answers