Question

The gas phase reaction between hydrogen and iodine is proposed to occur as follows:.....step 1.....fast:......I2 2 I.....step 2.....slow:....H2 + 2 I 2 HI(1) What is the equation for the overall reaction? Use the smallest integer coefficients possible. If a box is not needed, leave it blank.

Answer 1

`2I` will cancel out and the overall reaction will be

`I2 + H2` →
`2HI`

Step-by-step explanation:

The gas phase reaction between hydrogen and iodine is proposed to occur as follows

Step 1 fast
`I2` ⇄
`2I`

step 2 slow
`H2 + 2I` ⇄
`2HI`

The overall reaction for these step reaction will be

`I2 + H2` →
`2HI`