Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

S2 Chemistry > Rates Of Reaction > Flashcards

Rates Of Reaction Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

What is the equation for rate?

A

Rate = change in a measured quantity / time taken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the equation for the rate of reaction?

A

Rate of reaction = 1 / average time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the equation for average time?

A

Average time = time 1 + time 2 / 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What must happen for a reaction to take place between reacting particles?

A

Collide.

Have enough energy to react.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is activation energy?

A

Minimum amount of energy needed for chemical reaction to take place.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How is rate of reaction affected when a solid is broken into smaller pieces or ground into a powder?

A

It’s surface area increases.
More particles exposed to reactant.
More successful collisions in given time.
Rate of reaction increases.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the word equation for the complete combustion of carbon?

A

Carbon + Oxygen > Carbon dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the word equation for the incomplete combustion of carbon?

A

Carbon + Oxygen > Carbon monoxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the properties of carbon monoxide?

A

Toxic, colourless, odourless gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the physical properties of carbon dioxide?

A

Odourless
Colourless
Heavier than air
Slightly soluble in water
Does not support combustion
Is an acidic gas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the uses of carbon dioxide?

A

Fire extinguishers - does not aid combustion.
Carbonated drinks - soluble in water, dissolved under high pressure.
Dry ice.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How does increasing concentration increase the rate of reaction?

A

More particles available for more successful collisions in a given time, increasing rate of reaction.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the symbol equation for the reaction of carbon dioxide with water?

A

CO2 + H2O > H2CO3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the method for the test for carbon dioxide gas?

A

Carbon dioxide is bubbled through limewater, chemical reaction occurs and insoluble calcium carbonate is formed.
Solution turns from colourless to milky/cloudy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the word equation for the test for carbon dioxide gas?

A

Carbon hydroxide + Carbon dioxide > Calcium carbonate + Water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the word equation for the test for carbon dioxide in excess CO2?

A

Calcium hydroxide + Water + Carbon dioxide > Calcium hydrogen carbonate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What happens when excess carbon dioxide is bubbled through limewater?

A

Milky/cloudy solution turns back to colourless.

18
Q

What is the percentage of carbon dioxide in the atmosphere of Earth?

A

0.03% -0.04% CO2 in air.

19
Q

What is the affect of increasing temperature on the rate of reaction?

A

As temperature increases, particles gain energy and move faster.
Leading to more successful collisions in given period of time.
Rate of reaction increases.

20
Q

What is a catalyst?

A

Substance which speeds up rate of chemical reaction without itself undergoing permanent chemical change.

21
Q

What do catalysts provide in a reaction?

A

Alternative pathway with lower activation energy (Ea).

22
Q

What is an example of a reaction that uses a catalyst?

A

Hydrogen peroxide > Water + Oxygen

2H2O2 > 2H2O +O2

23
Q

What is an example of a catalyst which is used to increase the rate of reaction?

A

Manganese (IV) oxide.

24
Q

What is the test for oxygen gas?

A

Oxygen gas will relight a glowing splint.

25
Q

What are the physical properties of oxygen?

A

Colourless
Odourless
Gas
Same weight as air
Slightly soluble in water
Supports combustion.

26
Q

What are some uses of oxygen?

A

Breathing apparatus.
Welding.
Rocket engines.
Steel making.

27
Q

What are the reactions of oxygen?

A

Magnesium
Copper
Iron
Sulfur
Carbon

28
Q

What are the observation for the reaction of oxygen with magnesium?

A

Grey magnesium burns with bright white flame producing white ash of magnesium oxide.
Solid produced is basic oxide.

29
Q

What are the observation for the reaction of oxygen with copper?

A

Red-brown solid glows red when heated and blue-green flame is produced.
Black layer of basic copper oxide is formed.

30
Q

What are the observation for the reaction of oxygen with iron?

A

Grey solid burns with orange sparks.
Black basic oxide is formed.

31
Q

What are the observation for the reaction of oxygen with sulfur?

A

Yellow solid burns with blue flame, bad smell is produced and melts into red liquid.
Colourless, pungent gas of acidic sulfur oxide is formed.

32
Q

What are the observation for the reaction of oxygen with carbon?

A

Carbon monoxide produced in limited supply.
Carbon dioxide produced in plentiful supply.
Black carbon burns with orange sparks producing acidic colourless gas.

33
Q

What are the physical properties of hydrogen?

A

Colourless, odourless gas
Insoluble in water
Less dense than air
Neutral

34
Q

What is the test for hydrogen gas?

A

When lighted splint is held to test tube of hydrogen it will burn with squeaky pop.

35
Q

What are some of the uses of hydrogen?

A

Meteorological balloons - hydrogen less dense than air.
Hardening oils - increases melting point of an oil.
Potential clean fuels - does not produce carbon dioxide gas during use.

36
Q

What are the reactions of Hydrogen?

A

Oxygen
Copper oxide
Nitrogen in Haber process

37
Q

What are the observation for the reaction of hydrogen with oxygen?

A

Oxygen is reduced as it gains hydrogen.
Hydrogen is reducing agent as it caused reduction to take place.

38
Q

What is the word equation for the reaction of hydrogen with oxygen?

A

Hydrogen + Oxygen > Water

39
Q

What are the observation for the reaction of hydrogen with copper oxide?

A

Hydrogen acts as reducing agent and reduces copper oxide to copper.

40
Q

What is the word equation for the reaction of hydrogen with copper oxide?

A

Copper oxide + Hydrogen > Copper + Water

41
Q

What are the observation for the reaction of hydrogen with nitrogen in the Haber process?

A

Nitrogen is very unreactive elemtn and reacts with very few other elements.
It reacts with hydrogen to produce ammonia in Haber process.

42
Q

What is the word equation for the reaction of hydrogen with nitrogen in the Haber process?

A

Nitrogen + Hydrogen > Ammonia

S2 Chemistry (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions