Question

consider the following activation energy diagram.
from the above activation energy diagram it is seen that the reaction rate will _i_ at _ii_ temperature. the statement above is completed by information in row:
row i ii
a. increase higher
b. increase lower
c. decrease higher
d. decrease stay the same
e. increase stay the same

Explanation:

To solve this, we analyze the activation energy diagram. The diagram shows two temperature curves: \( T_1 \) and \( T_2 \) where \( T_2 > T_1 \). The shaded area represents the fraction of collisions with energy greater than or equal to the activation energy (\( E_a \)). At higher temperatures (\( T_2 \)), the curve is shifted such that a larger fraction of collisions have energy ≥ \( E_a \) (more area under \( T_2 \) curve in the shaded region). A higher fraction of effective collisions (with energy ≥ \( E_a \)) leads to a faster reaction rate. So, reaction rate increases at higher temperature.

Looking at the options, Row A has "increase" for i and "higher" for ii, which matches our analysis.

Answer:

A. increase, higher