Question

The inversion of cane sugar is first order in [sugar] and proceeds with half-life of 600 minutes at pH = 4 for a given concentration of sugar. However, if pH = 5, the half-life changes to 60 minutes. The rate law expression for the sugar inversion can be written as

• A. rate $=k\left[sugar\right]^{1}\left[H^{+}\right]^{2}$
• B. rate $=k\left[sugar\right]^{1}\left[H^{+}\right]^{1}$
• C. rate $=k\left[sugar\right]^{1}\left[H^{+}\right]^{4}$
• D. rate $=k\left[sugar\right]^{1}\left[H^{+}\right]^{0}$
• E. rate $=k\left[sugar\right]^{1}\left[H^{+}\right]^{5}$

Answer 1

Answer: (D)

Correct answer is (d) rate $=k\left[sugar\right]^{1}\left[H^{+}\right]^{0}$