Chemistry - Redox Reactions Question with Solution | TestHub
ChemistryRedox ReactionsDouble IndicatorMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
A volume of 50 ml of solution containing 1 g each of Na₂CO₃, NaHCO₃ and NaOH was treated with N-HCl.
What will be the titre reading if only methyl orange is used as indicator from the very beginning?
Options:
Answer:
B
Solution:
Methyl orange neutralizes everything to H₂CO₃: NaOH (25) + 2 × Na₂CO₃ (18.87) + NaHCO₃ (11.9) = 55.77 mmol HCl. Titre = 55.8 ml, matching (b).
Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Double Indicator
⏱ 2mℹ️ Source: QB
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