For a chemical reaction, which one can never be a fractional number?
Correct answer: C. Molecularity
- A. Order
- B. Half-life
- C. Molecularity
- D. Rate constant
Explanation
"Molecularity," cannot be a fractional number because it refers to the number of molecules that must collide simultaneously in order for a particular chemical reaction to occur. Molecularity is always a whole number because you can't have a fraction of a molecule involved in a collision.
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Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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