C2.4 Rates of reaction

HideShow resource information
4 things the rate of reaction depends on
temperature, catalyst, surface are (in solids), concentration (pressure in gasses)
1 of 14
how can you measure the rate of reaction
measure how quickly reactants are used up or how quickly products form
2 of 14
rate of reaction=
amount of reactant used or amount of product formed DIVIDED BY time
3 of 14
what is precipitation
the product of the reaction is a precipitate which clouds the solution
4 of 14
four important reactions that demonstrate the rate of reaction
hydrochloric acid with marble chips, magnesium metal with hydrochloric acid, sodium thiosulfate and hydrochloric acid to produce a cloudy precipitate, the decomposition of hydrogen peroxide
5 of 14
what is the collision theory
particles have to collide in order to react
6 of 14
why does higher temperature increase collisions
the particles will move quicker meaning theyll collide more often
7 of 14
why does higher concentration increase collisions
there will be more particles of reactant moving through the water molecules making collisions between the reacting particles more likely
8 of 14
why does larger surface area increase collisions
the particles in the solution will have more area to work on so there will be more frequent collisions
9 of 14
what is activation energy
minimum amount of energy needed by the particles to collide successfully
10 of 14
what is a catalyst
a substance which speeds up a reaction without being changed or used up in the reaction
11 of 14
how does a solid catalyst work
gives the reacting particles a surface to stick to which increases number of successful collisions
12 of 14
advantages of catalysts in industry
allows reaction to work at lower temperature reducing energy reducing energy cost, good for sustainable development, save a lot of money, can use over and over again
13 of 14
disadvantages of catalysts in industry
expensive to buy, often need to be removed from the product and cleaned
14 of 14

Other cards in this set

Card 2

Front

how can you measure the rate of reaction

Back

measure how quickly reactants are used up or how quickly products form

Card 3

Front

rate of reaction=

Back

Preview of the front of card 3

Card 4

Front

what is precipitation

Back

Preview of the front of card 4

Card 5

Front

four important reactions that demonstrate the rate of reaction

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Rate of reaction resources »