Chemistry - Redox Reactions Question with Solution | TestHub

ChemistryRedox ReactionsEquivalent Weight and n-factorEasy2 minQB
ChemistryEasysingle choice
Passage / Comprehension
{"root":{"type":"root","format":"","indent":0,"version":1,"children":[{"type":"paragraph","format":"","indent":0,"version":1,"children":[{"mode":"normal","text":"For the reaction: ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{MnO_{2}}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{HCl}"},{"mode":"normal","text":" ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\rightarrow "},{"mode":"normal","text":" ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{MnCl_{2}}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{Cl_{2}}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{H_{2}O}"},{"mode":"normal","text":" (Atomic masses: Mn = 55, Cl = 35.5)","type":"text","style":"","detail":0,"format":0,"version":1}],"direction":"ltr","textFormat":0}],"direction":"ltr"}}

The equivalent weight of is

Options:

Answer:
B
Solution:

Mn goes from +4 in to +2 in , gaining 2 , so n-factor = 2. = 55 + 32 = 87. E = 87/2 = 43.5, matching (b).

Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Equivalent Weight and n-factor
⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...