Answer: When the concentration of HI is tripled then the rate increases by a factor of 9.
Explanation:
The rate of a chemical reaction is the measure of concentration of reactants or the measure of concentration of products with respect to time.
As the rate of decomposition of HI is given as follows.
[tex]Rate = k[HI]^{2}[/tex]
When concentration of HI is tripled then the new rate will be as follows.
[tex]R^{'} = k[HI]^{2}\\= k \times (3)^{2}\\= 9k[/tex]
This shows that rate increases by a factor of 9.
Thus, we can conclude that when the concentration of HI is tripled then the rate increases by a factor of 9.
