Question

What would decrease the rate of most chemical reactions?
a. increasing the concentration of reactant atoms
b. increasing the size of the reactant particles
c. adding an appropriate catalyst
d. all of the above

Answer 1

a) increases rate
c) increases rate
d) definitely not d (since it says one of them decreases rate, and the other 2 don't)
b) must be b. Interesting.. I never thought about that.