Chemistry - Redox Reactions Question with Solution | TestHub
ChemistryRedox ReactionsProblem involving Equivalent ConceptMedium2 minQB
ChemistryMediummultiple choice
When copper is treated with a certain concentration of nitric acid, nitric oxide and nitrogen dioxide are liberated in equal volumes according to the equation: XCu + YHNO₃ Cu(NO₃)₂ + NO + NO₂ + H₂O. The coefficients of X and Y are, respectively,
Options:(select one or more)
Answer:
B
Solution:
Equal volumes of NO and NO₂ mean equal moles; take 1 mol each. Electrons gained = 1x3 (NO₃⁻ NO) + 1x1 (NO₃⁻ NO₂) = 4, so Cu lost 4 e⁻ 2 mol Cu, i.e. X = 2. Nitrate consumed: 2 as oxidant + 2x2 = 4 locked in Cu(NO₃)₂, giving Y = 6. The balanced equation is 2Cu + 6HNO₃ 2Cu(NO₃)₂ + NO + NO₂ + 3H₂O.
Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Problem involving Equivalent Concept
⏱ 2mℹ️ Source: QB
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