Brainscape's Knowledge GenomeTM

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


See full index

Chemistry 3RD form > Topic 4 - Acids, salts and the pH scale > Flashcards

Topic 4 - Acids, salts and the pH scale Flashcards

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

What do acids produce in aqueous solutions?

A

hydrogen ions (H+)

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

What do aqueous solutions of alkalis contain?

A

hydroxide ions (OH-)

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

What is the pH scale?

A

A scale from 0-14, that is a measure of the acidity or alkalinity of a solution.

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

How can pH be measured?

A

Using universal indicator or a pH probe.

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

What is a solution with a pH of 7?

A

A neutral solution.

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

What is an aqueous solution with a pH value below 7?

A

An aqueous solution of acid.

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

What is an aqueous solution with a pH value above 7?

A

An aqueous solution of alkaline.

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

3 examples of strong acids:

A

Hydrochloric acid
Nitic acid
Sulfuric acid

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

3 examples of weak acids:

A

ethanoic acid
citric acid
carbonic acid

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

For a given concentration of aqueous solutions the stronger the acid the lower the ____ it has

A

pH

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

What happens as the pH decreases by one unit?

A

The hydrogen ion concentration decreases by 10 x

e.g If you go from an acid with pH 6 to an acid of pH 4 there will be 100x more hydrogen ions.

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

a strong acid is __________ ________ in aqueous solutions?

A

completely ionised

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

a weak acid is _________ _______ in aqueous solutions

A

partly ionised

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

What is produced when acids react with certain metals?

A

Salt and Hydrogen

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

What type of reaction is it when metal oxides and hydroxides react with acid and what products are formed?

A

neutralisation reaction
Salt + Water

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

What type of reaction is it when acids react with metal carbonates and what products are formed?

A

Neutralisation reaction
salt + water + carbon dioxide

17
Q

What are the steps for the soluble salt experiment?

A

cognito vid

18
Q

what makes an acid strong?

A

The acid completely ionises ( the reactants turn completely into products)

19
Q

What makes acids weak?

A

The acid doesn’t fully ionise

20
Q

What is concentration

A

A measure of how much acid there is in a certain volume

Chemistry 3RD form (4 decks)

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