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

Answer:

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

       $I2 + H2$   →   $2HI$  

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

       $I2 + H2$   →   $2HI$