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Per NCERT Problem 7.8, the balanced ionic equation for Cr₂O₇²⁻ + SO₃²⁻ → Cr³⁺ + SO₄²⁻ in acid solution uses how many H⁺ ions on the reactant side?
A6 H⁺
B8 H⁺
C14 H⁺
D2 H⁺
Answer & Solution
Correct answer: B. 8 H⁺
NCERT Problem 7.8: Cr₂O₇²⁻ + 3 SO₃²⁻ + 8 H⁺ → 2 Cr³⁺ + 3 SO₄²⁻ + 4 H₂O. Cr 6→3 (Δ=3 ×2), S 4→6 (Δ=2 ×3).
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