Reaction Rate
Unlock all answers in this set
Unlock answersquestion
Which statement best applies collision theory to preventing a dangerous reaction from occurring?
answer
Keep the reactants in separate containers.
question
Which will cause an increase in the reaction rate between molecules?
answer
Molecules collide more frequently.
question
Consider the reaction below. C2H4(g)+H2(g)-->C2H6(g) Which change would likely cause the greatest increase in the rate of the reaction?
answer
increase temperature and increase pressure
question
A change in which factor will affect the rate of reaction only when gases are involved?
answer
pressure
question
An increase in temperature affects the reaction rate by
answer
increasing the number of molecules that have sufficient kinetic energy to react.
question
How does an increase in reactant concentration affect the rate of reaction?
answer
It leads to more frequent collisions, which increase reaction rate.
question
Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions?
answer
More molecules in the sawdust can collide with oxygen molecules.
question
Which topic is commonly used to explain activation energy and how chemical reactions happen?
answer
collision theory
question
Ben observes how quickly some dry wood is burning in a campfire. Which term best relates to Ben's observation?
answer
reaction rate
