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BITSAT2018ChemistryChemical KineticsActual

Which of the following expression is correct for the rate of reaction given below ? 5 Br - aq + BrO 3 - aq + 6 H + aq ⟶ 3 Br 2 aq + 3 H 2 O l

Options

  1. AΔ Br - Δt = 5 6 Δ H + Δt
  2. BΔ Br - Δt = 6 5 Δ H + Δt
  3. CΔ Br - Δt = 5 Δ H + Δt
  4. DΔ Br - Δt = 6 Δ H + Δt

Correct answer

A. Δ Br - Δt = 5 6 Δ H + Δt

Step-by-step solution

The given chemical reaction is 5 Br - aq + BrO 3 - aq + 6 H + aq ⟶ 3 Br 2 aq + 3 H 2 O l Rate law expression for the given reaction can be written as - 1 5 Δ Br - Δt = - Δ BrO 3 - Δt - 1 6 Δ H + Δt = + 1 3 Δ Br 2 Δt ⇒ - Δ Br - Δt = - 5 Δ BrO 3 - Δt = - 5 6 Δ H + Δt Δ Br - Δt = 5 6 Δ H + Δt

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