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Problem: Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo changes in oxidation number.(a)3SO2(g) + 2HNO3(aq) + 2H2O(l)→3H2SO4(aq) + 2NO(g)(b) 2H2SO4(aq) + 2NaBr(s)→Br2(l) + SO2(g) + Na2SO4(aq) + 2H2O(l)

FREE Expert Solution

To determine which element is reduced or oxidized, we must identify the changes in their oxidation states

Compare the oxidation number of the element on the reactant side and on the product side.


Remember the mnemonics:

Loss                Gain

Electrons         Electrons

Oxidation         Reduction

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Problem Details

Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo changes in oxidation number.

(a)3SO2(g) + 2HNO3(aq) + 2H2O(l)→3H2SO4(aq) + 2NO(g)

(b) 2H2SO4(aq) + 2NaBr(s)→Br2(l) + SO2(g) + Na2SO4(aq) + 2H2O(l)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Redox Reactions concept. If you need more Redox Reactions practice, you can also practice Redox Reactions practice problems.