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| 1 |
The oxidation state of Group IA (1) elements in compounds is (except on rare occassion for hydrogen): |
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1 |
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-1 |
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2 |
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7 |
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None of the previous answers. |
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| 2 |
The oxidation state of Group IIA (2) elements in compounds is: |
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1 |
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-2 |
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2 |
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6 |
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None of the previous answers. |
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| 3 |
The oxidation state of Group VIIA (17) in binary compounds is (except for dihalogen compounds, e.g., ICl): |
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7 |
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1 |
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-1 |
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0 |
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None of the previous answers. |
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| 4 |
The oxidation state of the transition metals in compounds is (are): |
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0 |
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1 |
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2 |
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3 |
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sometimes 1 but usually 2 or 3 |
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| 5 |
The oxidation number of iron in FeCl3 is: |
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2 |
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1 |
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6 |
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-3 |
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None of the previous answers. |
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| 6 |
The oxidation number of tin in SnO2 is: |
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2 |
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-4 |
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4 |
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-2 |
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None of the previous answers. |
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| 7 |
The oxidation number of vanadium in V2O3 is: |
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2 |
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3 |
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5 |
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-3 |
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None of the previous answers. |
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| 8 |
The oxidation number of nitrogen in ammonia is: |
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-3 |
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3 |
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0 |
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5 |
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None of the previous answers. |
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| 9 |
The oxidation number of nitrogen in nitrogen gas is: |
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-3 |
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5 |
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0 |
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1 |
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None of the previous answers. |
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| 10 |
The oxidation number of nitrogen in dinitrogen monoxide (nitrous oxide or laughing gas) is: |
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-3 |
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1 |
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5 |
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2 |
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None of the previous answers. |
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| 11 |
The oxidation number of nitrogen in nitrogen monoxide (nitric oxide) is: |
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-3 |
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1 |
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5 |
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2 |
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None of the previous answers. |
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| 12 |
The oxidation number of nitrogen in nitrite is: |
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-3 |
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3 |
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5 |
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2 |
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None of the previous answers. |
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| 13 |
The oxidation number of nitrogen in nitrogen dioxide is: |
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4 |
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-3 |
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5 |
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2 |
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None of the previous answers. |
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| 14 |
The oxidation number of nitrogen in nitrate is: |
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4 |
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-3 |
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5 |
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2 |
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None of the previous answers. |
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| 15 |
The oxidation number of chromium in dichromate is: |
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6 |
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-6 |
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7 |
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2 |
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None of the previous answers. |
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| 16 |
Which one of the following reactions is not a redox reaction? |
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2 Al(s) + 6 HCl(aq) = 2 AlCl3(aq) + 3 H2(g) |
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2 KBr(aq) + Cl2(aq) = 2 KCl(aq) + Br2(aq) |
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Ca(HCO3)2(aq) = CaCO3(s) + CO2(g) + H2O(l) |
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14 HNO3(aq) + 3 Cu2O(s) = 6 Cu(NO3)2(aq) + 2 NO(g) + 7 H2O(l) |
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None of the previous answers. |
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| 17 |
Which one of the following types of reactions is always a redox reaction? |
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Combination |
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Decomposition |
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Single replacement |
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Double replacement |
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None of the previous answers. |
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| 18 |
Which one of the following types of reactions is never a redox reaction? |
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Combination |
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Decomposition |
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Single replacement |
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Double replacement |
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None of the previous answers. |
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| 19 |
In the reaction, Zn(s) + CuSO4(aq) = ZnSO4(aq) + Cu(s), what is oxidized? |
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Zn |
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Cu2+ |
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SO42- |
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Cu(s) |
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The reaction is not a redox reaction. |
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| 20 |
In the reaction, Zn(s) + CuSO4(aq) = ZnSO4(aq) + Cu(s), what is the oxidizing agent? |
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Zn |
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Cu2+ |
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SO42- |
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Cu(s) |
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The reaction is not a redox reaction. |
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| 21 |
In the reaction, 2 KBr(aq) + Cl2(aq) = 2 KCl(aq) + Br2(aq), what is reduced? |
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K+ |
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Br- |
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Cl2 |
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Br2 |
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The reaction is not a redox reaction. |
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| 22 |
In the reaction, 2 KBr(aq) + Cl2(aq) = 2 KCl(aq) + Br2(aq), what is the reducing agent? |
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K+ |
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Br- |
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Cl2 |
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Br2 |
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The reaction is not a redox reaction. |
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| 23 |
In the reaction,
14 HNO3(aq) + 3 Cu2O(s) = 6 Cu(NO3)2(aq) + 2 NO(g) + 7 H2O(l)
what is oxidized? |
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Cu2O |
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NO3- |
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H+ |
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NO |
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None of the previous answers. |
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| 24 |
In the reaction, MgO(s) + H2O(l) = Mg(OH)2(s),
what is oxidized? |
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MgO |
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H2O |
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Mg(OH)2 |
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The reaction is not a redox reaction. |
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| 25 |
How many electrons are needed to balance the half reaction involving oxidation of iodide to iodine (using the lowest whole number coefficients) and on which side of the equation will they appear? |
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1, right |
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2, right |
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2, left |
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None of the above answers. |
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| 26 |
How many electrons are needed to balance the half reaction involving reduction of copper(II) to elemental copper (using the lowest whole number coefficients) and on which side of the equation will they appear? |
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1, left |
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2, right |
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2, left |
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None of the above answers. |
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| 27 |
How many electrons are needed to balance the half reaction involving reduction of iodate to elemental iodine (using the lowest whole number coefficients and assuming acidic media) and on which side of the equation will they appear? |
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10, left |
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5, left |
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4, left |
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None of the above answers. |
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| 28 |
How many electrons are needed to balance the half reaction involving reduction of permangante to manganese(II) (using the lowest whole number coefficients and assuming acidic media) and on which side of the equation will they appear? |
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1, left |
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5, left |
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3, left |
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None of the above answers. |
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| 29 |
How many electrons are needed to balance the half reaction involving oxidation of thiosulfate to tetrathionate [S4O62-] (using the lowest whole number coefficients) and on which side of the equation will they appear? |
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2, right |
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1, right |
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4, right |
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None of the above answers. |
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