Acids and Bases

aa

?
  • Created by: zoolouise
  • Created on: 18-04-16 10:45
What is the definition of an acid?
An acid is a compound that donates H+ ions (protons) in aqueous solution.
1 of 23
What is the process called?
Dissociating.
2 of 23
What are the common acids and their formulae?
Hydrochloic Acid (HCl), Sulfuric Acid (H2SO4), Nitric Acid (HNO3), Etanoic Acid (CH3COOH)
3 of 23
What is the definition of a base?
A base is a compound that accepts H+ ions from an acid.
4 of 23
What are the common bases and their formulae?
Magnesium Oxide (MgO), Sodium Hydroxide (NaOH), Calcium Oxide (CaO), Ammonia (NH3)
5 of 23
What is the definition of a strong acid?
A strong acid is one that fully dissociates in aqueous solution
6 of 23
What is the definition of a weak acid?
A weak acid is one that partially dissociates in aquoeus solution
7 of 23
What happens to the acid when it can donate H+ more easily?
The more easily an acid can donate H+ the stronger the acid.
8 of 23
What does a concentrated acid consist of?
A large quantity of acid and a small quantity of water.
9 of 23
What does a dilute acid consist of?
A large quantity of water
10 of 23
What is the acidic of a solution a measure of?
The concentration of the aqueous hydrogen ions, H+
11 of 23
Who proposed the pH scale?
Soren Sorenson proposed the pH scale in 1909
12 of 23
What's the formulae for pH?
-log[H+] (H+ is the concentration of H+ in moldm^3
13 of 23
What is a sale?
A salt is a compound that forms when a metal ion replaces the hydrogen ion in an acid
14 of 23
What happens in neutralisation?
The base accepts the H+ ions donate dby the acid and the H+ ions of the acid are replaced by metal ions to form a salt. Neutralisation always produces a salt.
15 of 23
What is an acid-based titration?
A type of volumetric analysis where the volume of one solution is measured.
16 of 23
What is a standard solution?
A standard solution is a solution whose concentration is accurately known
17 of 23
What are the features of a standard solution?
High Purity, Stability, Low hydrogscopicity, High molar mass
18 of 23
What's the method of performing a titration? (Steps 1-3)
Pour one solution into a burette, use a funnel, remove funnel, read burette. Use a pipette to add a volume of the other solution into a conical flask. Add few drops of indiciator to the solution in the flask.
19 of 23
What's the method of performing a titration? (Steps 4-6)
Run the acid frm the burette to the solution in the conical flask, swirl it. Stop when indicator changes colour. Read burette again and subtract to find volume used.
20 of 23
How do you perform double titrations?
One titrations performed, two stages, two different indicators, one added at each stage to calculate the concentrations of both bases.
21 of 23
When do we use a back titration?
When the titrant can be too slow, or there can be a problem with the end point determination or the base is an insoluble salt.
22 of 23
How do you perform a back titration?
A known excess of one reagant A reacants with an unkown amount of B. At the end the amount of A reamins is found by titration. A simple calcultion gives the amount of A that's used and B that's reacted.
23 of 23

Other cards in this set

Card 2

Front

What is the process called?

Back

Dissociating.

Card 3

Front

What are the common acids and their formulae?

Back

Preview of the front of card 3

Card 4

Front

What is the definition of a base?

Back

Preview of the front of card 4

Card 5

Front

What are the common bases and their formulae?

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 Acids, bases and salts resources »