Question

In the reaction of Mg (s) + 2 HCl (aq) Imported Asset MgCl2 (aq) + H2 (g), what

Answer 1

Answer: Decrease in concentration of reactant

Explanation:

For a typical reaction of an acid with a metal, decrease in concentration of reactant (acid) would lead to decrease in formation of salt or hydrogen. Increase in the concentration would lead to increase in the formation of products.

Temperature and pressure also have little effect here since the reaction is spontaneous in nature

Answer 2

To decrease the rate of the forward reaction you can do the following:

- decrease the concentration of the reactants

- increase the concentration of the products

- increase the pressure so the hydrogen gas will not be easily removed from the reaction

- decrease the temperature, number of collisions will decrease so the rate of the reaction will decrease