According to the temperature law of van't Hoff. For every rise of 10 degrees Celsius the rate of oxidation is increased how many times?

• A. Once
• B. Twice
• C. 2.5
• D. 3

Answer: (C)

The rate of a chemical reaction climbs as temperature rises, and van't Hoff’s view expresses this with a Q10 factor—the factor by which the rate increases when the temperature is raised by ten degrees. For many oxidation reactions, that factor is about 2.5, so a 10°C increase makes the rate roughly 2.5 times faster. This is a practical average; the exact increase depends on the specific reaction and conditions, but 2.5 is a common, reasonable estimate used in electrochemistry and related fields. So the best answer reflects this typical 2.5× rise.