Question

Files Chmura Chemistry Test.pdf Adobe Acrobat Pro DC File Edit Vie Window Help Sign ln Home Tools Files Chmura Che... x tl Share 83 Jagiellonian University Medical College CHEMISTRY TESTS TEST 2018 31. When KMnO, acts as an oxidizing agent and ultimately forms MnO,-. MnO2, Mn2O3 or Mn'", the number of electrons accepted during the redox reaction in each case is, respectively: B. 1, 5. 3. 7 C. 1,3, 4, 5 D. 3. 5,7, 1 E. 2,3. 4. 5 2 32. What is the systematic (IUPAC) name for Co2(S03)3? A. cobalt sulfide, B. cobalt(III) sulfate(VI) C. cobalt(II) sulfate(VI) D. cobalt(II sulfate(IV) A 1229PM 519/2019 Tvpe here to search

Answer 1

Q31. Correct answer is : (C) 1, 3, 4, 5

Q31. Correct answer is : (E) cobalt (III) sulfite

Exlplanation

Oxidation number of Mn in KMnO₄ is +7

Oxidation number of Mn in MnO₄^2- is +6

Hence Mn only gains 1 electron.