# Problem: Consider the following reaction equations. Which is/are redox reactions?i. Cr(C2H3O2)2 (aq) + 2 NaOH (aq) → 2 NaC 2H3O2 (aq) + Cr(OH)2 (s)ii. Fe (s) + 4 HNO3 (aq) → Fe(NO3)2 (aq) + 2 NO2 (g) + 2 H2O (l)iii. B2O3 (s) + 6 KOH (aq) → 2 K 3BO3 (aq) + H2O (l) A. i onlyB. ii onlyC. iii onlyD. i and iiE. ii and iii

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Consider the following reaction equations. Which is/are redox reactions?

i. Cr(C2H3O2)(aq) + 2 NaOH (aq) → 2 NaC 2H3O(aq) + Cr(OH)(s)

ii. Fe (s) + 4 HNO(aq) → Fe(NO3)(aq) + 2 NO(g) + 2 H2O (l)

iii. B2O(s) + 6 KOH (aq) → 2 K 3BO(aq) + H2O (l)

A. i only
B. ii only
C. iii only
D. i and ii
E. ii and iii

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Based on our data, we think this problem is relevant for Professor Funck's class at JMU.