Making a reaction go faster -p.1 9.1 2

Question 1

successful collisions

Answer 1

collisions that result in a reaction

Question 2

increase in concentration

Answer 2

increase in reaction rate-frequency in collisions between reacting solutes increases.There are more of them in a giving volume so closer together

Question 3

greater rate of reaction on a graph

Answer 3

gradient of one with higher reaction rate will always be higher than the one below but will level off before

Question 4

increase in pressure (for gas state)

Answer 4

increase in rate of reaction.more reactant molecules in a given volume of mixture so frequency of collision increases

Question 5

changing pressure of a liquid or a solid

Answer 5

no effect volume of solid or liquid changes very little under pressure so the particles do not move closer together

Question 6

a larger surface area to volume ratio

Answer 6

for heterogeneous reactions invovling a sold will result in a faster reaction
the effectiveness of a solid catalyst is also imporved if it is finely powdered