Chemistry - Redox Reactions Question with Solution | TestHub

ChemistryRedox ReactionsEquivalent Weight and n-factorMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
{"root":{"type":"root","format":"","indent":0,"version":1,"children":[{"type":"paragraph","format":"","indent":0,"version":1,"children":[{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{KMnO_{4}}"},{"mode":"normal","text":" oxidizes ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{X^{n+}}"},{"mode":"normal","text":" ion to ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{XO_{3}^{-}}"},{"mode":"normal","text":" in acid solution. ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{3.0\\times 10^{-3}}"},{"mode":"normal","text":" mole of ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{X^{n+}}"},{"mode":"normal","text":" requires ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{1.2\\times 10^{-3}}"},{"mode":"normal","text":" mole of ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{MnO_{4}^{-}}"},{"mode":"normal","text":".","type":"text","style":"","detail":0,"format":0,"version":1}],"direction":"ltr","textFormat":0}],"direction":"ltr"}}

What is the atomic mass of X, if the mass of 1 g-equivalent of in this reaction is 79.25? is the molecular form of .

Options:

Answer:
A
Solution:

n-factor of in this oxidation = 2, so = 2 × 79.25 = 158.5. Atomic mass of X = 158.5 - 3 × 35.5 = 158.5 - 106.5 = 52, matching (a).

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

Doubts & Discussion

Loading discussions...