The decomposition reaction 2 hi(g) → h2(g) + 12(g), is second order and has a rate constant equal to 1.6 x 10m's at 700 °c. if the initial concentration of hi in the container is 3.4 x 10-m, how many minutes will it take for the concentration to be reduced to 8.0 x 104 m?

Answer : The time taken by the reaction is 12714.46 minutes.

Explanation :

The expression used for second order kinetics is:

where,

k = rate constant =

t = time = ?

= final concentration =

= initial concentration =

Now put all the given values in the above expression, we get:

     (1 min = 60 s)

Therefore, the time taken by the reaction is 12714.46 minutes.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error