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- 1. Multiple ChoiceWhat is the species that lose electrons in a redox reaction?oxidizing agentreducing agentis reduceddecreases in oxidation number
- 2. Multiple ChoiceWhat is the species that gain electrons in a redox reaction?oxidizing agentreducing agentis oxidizedincreases in oxidation number
- 3. Multiple Choice
What is the oxidizing agent of this reaction?
3Mg + N2−−−−> Mg3N2
Mg
N2
Mg3N2
MgN
- 4. Multiple ChoiceWhat is the reducing agent of this reaction?
2Al(s) + 6H+(aq) −−−> 2Al3+ (aq) + 3H2(g)H+Al3+AlH2 - 5. Multiple Choice
Which species undergoes a loss of electrons?
Fe(s) + Cl2(g)−−−>Fe2+(aq) + Cl- (aq)
Fe
Fe2+
Cl2
Cl-
- 6. Multiple Choice
Which species undergoes a gain of electrons?
Zn(s) + Mg2+(aq) −−−> Zn2+(aq) + Mg (s)
Zn
Mg2+
Zn2+
Mg
- 7. Multiple ChoiceWhat is the oxidation number of Fe in FeO?+1-1+2-2
- 8. Multiple ChoiceWhat is the oxidation number of H in CH4?-1+1-4+4
- 9. Multiple ChoiceIn the reaction
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________ReducedSynthesizedOxidizedNone of the above - 10. Multiple ChoiceWhat element always has an oxidation number of -1?HydrogenFluorineChlorineIodine
- 11. Multiple Choice
What is the oxidation number of O in elemental O2 ?
0
-2
+1
+2
- 12. Multiple ChoiceIf in a reaction, copper is reduced; its number of electrons has:IncreasedDecreasedRemained ConstantVaries Randomly
- 13. Multiple ChoiceWhich substance is reduced in the following reaction?
NaOH + Li --> LiOH + NaLiNaOH - 14. Multiple ChoiceWhich compound is higher in reactivity, Ag or Ca?AgCaNeitherThey're equal
- 15. Multiple ChoiceBased on the activity series, will this reaction occur?
Ni (s) + H2O (l) →YesNo - 16. Multiple ChoiceBased on the activity series, will this reaction occur?
Au (s) + HCl (l) →YesNo - 17. Multiple ChoiceWhich one of the following would result in a displacement reaction?Iron with magnesium chloridemagnesium with iron chlorideIron with Zinc Sulphategold with silver nitrate
- 18. Multiple ChoiceA displacement reaction will occur when...a more reactive metal displaces a less reactive metal from its compound.A less reactive metal displaces a more reactive metal from its compoundDisplacement only occurs when two of the same metals are reactedDisplacement reactions will only occur in metals above iron in the reactivity series
- Answer choicesTagsAnswer choicesTags