The animation below demonstrates the reaction between hydrogen and iodine to produce hydrogen iodide:

H2(g) + I2(g) --> 2HI(g)

hydrogen molecule, H2 iodine molecule, I2 hydrogen iodide molecule, HI
H2 molecule
I2 molecule
HI molecule

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Material produced for the Royal Society of Chemistry for use in UK Schools and Colleges.
Icodeon Software