Chemistry - Redox Reactions Question with Solution | TestHub
ChemistryRedox ReactionsEquivalent Weight and n-factorEasy2 minQB
ChemistryEasysingle choice
A metal exhibits the valencies of 2 and 3. Its equivalent weight is 28 when it forms a metal oxide of formula MO. What mass of H₂SO₄ is needed for complete reaction with 4.8 g of M₂O₃?
Options:
Answer:
A
Solution:
In MO the metal is divalent, so atomic mass = 28 × 2 = 56. M₂O₃ molar mass = 2(56) + 48 = 160. M₂O₃ + 3H₂SO₄ M₂(SO₄)₃ + 3H₂O; 4.8 g = 0.03 mol oxide needs 0.09 mol H₂SO₄ = 0.09 × 98 = 8.82 g. Hence (a).
Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Equivalent Weight and n-factor
⏱ 2mℹ️ Source: QB
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