Which one of these changes describes an oxidation half-reaction? O decrease in oxidation number reactant acting as an oxidizing agent pure oxygen becoming oxide ion O loss of electrons electrons as reactants

When does oxygen have an oxidation number different from 2-? O When it is bonded to fluorine O When it is bonded to hydrogen When it is bonded to itself It never does

4. Identify the element oxidized and the element reduced in the first reaction of the lab: Assign oxidation numbers to each element to do this. HNO3(aq) + Cu(s) → Cu(NO3)2(aq) + H2O() + NO2(g)econbyH O biloa eeoubong nollosen abitua Mue () bos

Assign oxidation numbers and identify the change in oxidation numbers for chlorine and arsenic forthe given reaction. CIO3- (aq) + As2S3 →Cl- (aq) + H2ASO4- (aq) +SO42+ (aq)

Ag+ + e- = Ag   Question 32 options:   This reaction is an example of double replacement reaction.   This reaction is an example of reduction reaction.   This reaction is an example of decomposition reaction.   This reaction is an example of oxidation reaction.

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In the following oxidation-reduction reaction, what is being oxidized? C4H8 + 6 02 → 4 CO2 + 4 H20 O CO2 O C4H8 O H2O

Which of the following reactions does not involve oxidation-reduction? O All are oxidation-reduction reactions. O Zn + 2HCI + ZnCl2 + H2 O CH4 + 302 2H20 + CO4 O 2Na + 2H20 2NAOH + H2 O MnO2 + 4HCI → Cl2 + 2H20 + MnCl2

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