Which choice below would affect the rate of reaction in the opposite way from the other four?
a. Cool the reaction down
b. Add a catalyst
c. Decrease the pressure
d. Use larger pieces of solid reactants
e. Decrease the concentration of the reactants
Answer (2)
Adding a catalyst as this would speed up the reaction and the rest would slow it down
The choice that affects the rate of reaction in the opposite way from the others is option (b) Add a catalyst, as it increases the reaction rate, while the other options decrease it.
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