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1. Assign an oxidation number to each atom in the reactants. 2CO( g )+O2( g )2CO

ID: 1052241 • Letter: 1

Question

1. Assign an oxidation number to each atom in the reactants.
2CO(g)+O2(g)2CO2(g)

Express your answers as signed integers separated by commas. For example: +1, +2, +3.

2. Assign an oxidation number to each atom in the products.
2CO(g)+O2(g)2CO2(g)

Express your answers as signed integers separated by a comma. For example: +1, +2.

3.

Assign an oxidation number to each atom in the reactants.
CuO(s)+2HCl(aq)CuCl2(aq)+H2O(l)

Express your answers as signed integers separated by commas. For example: +1, +2, +3.

4.

Assign an oxidation number to each atom in the products.
CuO(s)+2HCl(aq)CuCl2(aq)+H2O(l)

Express your answers as signed integers separated by commas. For example: +1, +2, +3.

5.

Assign an oxidation number to each atom in the reactants.
2MnO4(aq)+5SO2(g)+2H2O(l)2Mn2+(aq)+5SO42(aq)+4H+(aq)

Express your answers as signed integers separated by commas. For example: +1, +2, +3.

6.

Assign an oxidation number to each atom in the products.
2MnO4(aq)+5SO2(g)+2H2O(l)2Mn2+(aq)+5SO42(aq)+4H+(aq)

Express your answers as signed integers separated by commas. For example: +1, +2, +3.

Explanation / Answer

2CO(g)+O2(g)2CO2(g)

(+2)(-2) 0 (+4) (-4)

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CuO(s)+2HCl(aq)CuCl2(aq)+H2O(l)

(+2)(-2) (+1)(-1) (+2)(-1) (+1)(-2)

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2MnO4(aq)+5SO2(g)+2H2O(l)2Mn2+(aq)+5SO42(aq)+4H+(aq)

(+7)(-2) (+4)(-2) (+1)(-2) (+2) (+6)(-2) (+1)