Answers Chemistry Redox and Nuclear Chemistry — TestQuestion 13

13

QuizMultiple Choice

Redox and Nuclear Chemistry — Test

Question 13 • Chemistry

Which of these is not an oxidation-reduction reaction?

Answer

A

2 Cs s plus cap i sub 2 times g rightarrow 2 CsI s

B

2 cap h sub 2 SO sub 4 A q plus 2 Ba OH sub 2 A q rightarrow 2 BaSO sub 4 s plus 4 cap h sub 2 cap o l

C

XeF sub 6 times s rightarrow XeF sub 4 times s plus cap f sub 2 of g

D

Zn times s plus 2 AgNO sub 3 A q rightarrow Zn open paren NO sub 3 close paren sub 2 A q plus Ag times s

Explanation

In choice B, sulfur stays at +6 in H₂SO₄ and BaSO₄, while barium stays at +2, hydrogen at +1, and oxygen at −2. No element changes oxidation state, so this acid-base neutralization and precipitation reaction is not an oxidation-reduction reaction. In A, C, and D, oxidation states do change, so those are redox reactions.

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