Consider the following statements based on collision theory. Indicate if the sta
ID: 522777 • Letter: C
Question
Consider the following statements based on collision theory. Indicate if the statement is true or false.
True False For a given reaction, collisions of any energy can lead to the formation of a product.
True False Collisions with the appropriate orientation may lead to product formation if a certain minimum energy is met.
True False Increasing the temperature of a reaction increases the energy in the random collisions which will lead to a smaller percentage of collisions yielding products.
True False A catalyst works by lowering the activation energy of a reaction, allowing a greater number of collisions to overcome the activation barrier.
True False Increasing the concentration of the reactants in a first order reaction will decrease the number of successful collisions that take place in the reaction.
Explanation / Answer
1) FALSE - For a given reaction, collisions of energy greater than activation energy only leads to formation of a product.
2) TRUE - Collisions with the appropriate orientation leads to product formation if certain minimum energy is met and that energy is activation energy.
3) FALSE - Increasing the temperature of a reaction increases the energy in the random collisions, but these leads to a greater percentage of collisions yielding products.Actually for every 10 degree rise in temperature,the rate of reaction doubles that means larger percentage of molecules are crossing the activation energy due to collisions.
4) TRUE - A catalyst provides an alternative way for the molecule to turn into product by lowering the activation energy and thus enabling more number of molecules to achieve activation energy.
5) FALSE - in a first order reaction, increasing the concentration of reactants increases the formation of products.This takes place due to increase in number of successful collisions between reactant molecules which get depleted over time if the concentration is not increased.