Chemistry - Redox Reactions Question with Solution | TestHub
ChemistryRedox ReactionsTitrationMedium2 minQB
ChemistryMediumsingle choice
A volume of 20 ml of 0.5 M solution is diluted to 200 ml. Twenty millilitres of the diluted solution is mixed with 40 ml of 1 M . Thirty millilitres of this mixture is diluted to 100 ml. How many millilitres of 0.01 M solution are needed to titrate 10 ml of the final diluted solution?
Options:
Answer:
A
Solution:
mmol = 20 0.5 = 10 0.05 M after dilution; 20 ml holds 1 mmol; 30 ml of the 60 ml mixture holds 0.5 mmol; diluted to 100 ml, a 10 ml aliquot holds 0.05 mmol = 0.3 meq. ( = 2) is 0.02 N: V = 0.3/0.02 = 15 ml, option (a).
Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Titration
⏱ 2mℹ️ Source: QB
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