Chemistry - Redox Reactions Question with Solution | TestHub
ChemistryRedox ReactionsProblem involving Equivalent ConceptEasy2 minQB
ChemistryEasymultiple choice
A volume of 25 ml of an aqueous solution of hydrated oxalic acid () containing 16.2 g per litre requires 25 ml of 0.2 M solution for complete neutralization. Which of the following statement about the acid solution is/are correct?
Options:(select one or more)
Answer:
B, C
Solution:
used = 25 0.2 = 5 mmol, so oxalic acid in 25 ml = 2.5 mmol molarity = 2.5/25 = 0.1 M ((d) false). Mass in 25 ml = 16.2 0.025 = 0.405 g, so hydrate molar mass = 0.405/0.0025 = 162, giving 90 + 18x = 162, = 4 ((a) false, (b) true). For oxidation: 100 ml holds 10 mmol acid = 20 meq; ( = 5): 20 ml 0.2 M = 4 mmol = 20 meq - exactly matches, (c) true. Hence (b), (c).
Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Problem involving Equivalent Concept
⏱ 2mℹ️ Source: QB
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