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Title: Under certain conditions the reaction H2O2 + 3I- + 2H+ I3- + 2H2O occurs by the following series of ...
Post by: lindiwe on Mar 21, 2021

Under certain conditions the reaction H₂O₂ + 3I^- + 2H⁺→ I₃^- + 2H₂O occurs by the following series of steps:

k1

Step 1.

H2O2 + H+H3O2+

k-1

	Step 2.		H3O2+ + I-→ H2O + HOI	(slow, rate constant k2)
	Step 3.		HOI + I-→ OH- + I2	(fast, rate constant k3)
	Step 4.		OH- + H+→ H2O	(fast, rate constant k4)

Step 5.

I2 + I-→ I3-

(fast, rate constant k5)

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The rate law for the reaction would be:

 

Reference: Ref 12-17

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◦ Δ[I₃]/Δt = k[H₂O₂]
◦ Δ[I₃]/Δt = k[H₂O₂][H⁺][I^-]
◦ Δ[I₃]/Δt = k[H₂O₂][H⁺]
◦ Δ[I₃]/Δt = k[H₂O₂][I^-]
◦ Δ[I₃]/Δt = k[H₂O₂][H⁺]²[I^-]^-3

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Title: Under certain conditions the reaction H2O2 + 3I- + 2H+ I3- + 2H2O occurs by the following series of ...
Post by: chevyboi1976 on Mar 21, 2021

Δ[I₃]/Δt = k[H₂O₂][H⁺][I^-]

Title: Re: Under certain conditions the reaction H2O2 + 3I- + 2H+ I3- + 2H2O occurs by the following series
Post by: Aaron Vallejo on Jul 18, 2021

thank you

Title: Re: Under certain conditions the reaction H2O2 + 3I- + 2H+ I3- + 2H2O occurs by the following series
Post by: Zimo Han on Feb 13, 2022

thank you