Chemistry - Redox Reactions Question with Solution | TestHub
ChemistryRedox ReactionsDetermination of Oxidation StateEasy2 minQB
ChemistryEasysingle choice
A polyvalent metal weighing 0.112 g and having atomic mass 56 reacted with dilute to give 44.8 ml of hydrogen at 0°C and 1 atm. The solution containing the metal in this lower oxidation state required 20 ml of 0.1 N-permanganate for complete oxidation. What are the valencies of the metal?
Options:
Answer:
D
Solution:
mol = 44.8/22400 = 2 mmol; mol metal = 0.112/56 = 2 mmol, so the lower valency is 2. meq = 20 0.1 = 2; electrons per metal atom = 2/2 = 1, so the higher valency is 3. Valencies 2 and 3, option (d).
Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Determination of Oxidation State
⏱ 2mℹ️ Source: QB
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