試題詳解

5. The rate of H₂ gas production from a reaction of magnesium turnings and hydrochloric acid in a beaker is plotted against time as shown in the figure below. Which of the following statements is incorrect?
(A)The reaction rate is dependent on the concentration of hydrochloric acid.
(B)The reaction rate is dependent on the pressure of H₂.
(C)The reaction rate is dependent on the surface area of magnesium turnings.
(D)In the figure, the reaction rate decreases after t1, because the concentration of hydrochloric acid decreases.
(E)The formation of the AB section in the figure is because the reaction is exothermic, the temperature of the solution increases, and thus the reaction rate increases.