Description QUESTION 1 Oxidation-reduction reactions are reactions in which: protons are transfer ...

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Description QUESTION 1 Oxidation-reduction reactions are reactions in which: protons are transferred from one reactant to another electrons are transferred within the same atom electrons are transferred from one reactant to another oxygen molecules must participate 3 points Save Answer QUESTION 2 In a reaction, oxidation can occur independently of reduction. TRUE FALSE 2 points Save Answer QUESTION 3 Preventing the rusting of iron is a major industry. Which of the following methods would NOT control the amount of iron corrosion? keep the iron sample dry coat the iron sample with a waterproof coating place a sacrificial electrode in contact with the iron bathe the iron in a weakly acidic solution 3 points Save Answer QUESTION 4 The oxidation number of an atom of a free element is always 1. TRUE FALSE 2 points Save Answer QUESTION 5 In their compounds, metals: are assigned positive oxidation numbers are assigned negative oxidation numbers are assigned oxidation numbers of zero can be assigned any oxidation number that balances the equation 3 points Save Answer QUESTION 6 In the reaction, C + 2 S Imported Asset CS2, the substance that is the oxidizing agent is: the C the S the CS2 both the C and the S 3 points Save Answer QUESTION 7 In the reaction, 2 Al (s) + 3 Sn+2 (aq) Imported Asset 2 Al+3 (aq) + 3 Sn (s), the reducing agent is: the Al the Sn+2 the Al+3 the Sn 3 points Save Answer QUESTION 8 How many electrons should be added to balance the following oxidation half-reaction, H2O2 Imported Asset 2 H+ + O2? None One Two Four 3 points Save Answer QUESTION 9 When balancing the oxidation and reduction half-reactions for basic solutions, you should: use H+ and OH? equally in order to balance the equation use H+ only in order to balance the equation use H+ and H2O, as needed to balance the equation use OH? and H2O, as needed to balance the equation 3 points Save Answer QUESTION 10 Electrochemical reactions are oxidation-reduction reactions that: are capable of generating electric current have unequal oxidation numbers on both sides of the equation only generate the oxidation reaction only generate the reduction reaction 3 points Save Answer QUESTION 11 The voltaic cell produces electric current from a spontaneous chemical reaction, but electrolytic reactions are not spontaneous. TRUE FALSE