rates of reaction

Question 1

4 factors which speed up reactions

Answer 1

• temp.
• conc.
• particle size
• catalysts

Question 2

how does temp. increase rate of reaction

Answer 2

higher temp.=higher kinetic energy=more frequent collisions=more reactions

Question 3

how does a higher conc. increase rate of reaction

Answer 3

higher conc.=more particles in same volume= more frequent collisions=more reactions

Question 4

how does particle size increase rate of reaction

Answer 4

smaller particle size= more surface area= more frequent collisions= more reactions

Question 5

how does a catalyst increase rate of reaction

Answer 5

catalysts speed up rate of reaction for both forward and backward equations as they provide a different route for a reaction with lower activation energy

Question 6

what is the collision theory

Answer 6

not all collisions are successful. unless particles have minimum energy needed to react when they collide, no reactions occur