The overall reaction 2HI → H2 + I2 can be accelerated by Pt2+

CHEMISTRY · Subjective · A Level · Chemistry · Introduction to organic chemistry · Introduction to organic chemistry

Problem

The overall reaction 2HI → H2 + I2 can be accelerated by Pt2+. One elementary step is known: Step 1 2HI + Pt2+ → H2 + PtI2 (slow) Propose a single additional elementary step that both regenerates Pt2+ and completes the mechanism. Write only that step.

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