Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
3 Cards in this Set
- Front
- Back
|
Effect of an increase in concentration of a reactant on the rate of reaction |
Number of particles per unit volume increases; frequency of effective collision increases; rate of reaction increases
"according to the Collision Theory" |
|
|
Effect of an increase in temp on the rate of reaction? |
There's an increase in the avg kinetic energy of reactant molecules; more molecules possess energy larger than or equals to the activation energy; resulting in more collisions with energy larger or equal to the activation energy; increase in frequency of effective collisions; rate increases |
|
|
Effect of a catalyst on the rate of reaction? |
A catalyst is a substance that alters the rate of reaction while remaining chemically unchanged at the end of the reaction
In the presence of a catalyst, the reaction has a different pathway with a lower activation energy compared to the uncatalysed reaction; more molecules will possess energy greater or equal to this lowered activation energy; hence the frequency of effective collisions increase; rate of reaction increases |
