Amount of substance
We can now calculate the
amount of substance in a given volume of solution if we know the concentration.
We will express the concentration in molarity.
Example
Find the mole NaCl in 100mls of a 1M salt solution.
Mole = concentration(molarity) X volume (litres) = 1 X 0.1 =0.1mole of NaCl
| Molarity |
Volume |
Mole |
| 0.1M |
100ml |
|
| 3.0M |
2litres |
|
| 2.5M |
500ml |
|
| 10.0M |
200ml |
|
| 0.2M |
2litres |
|
| 0.5M |
20ml |
|
| 0.1M |
50ml |
|
| 0.001M |
10ml |
|
| 0.01M |
500ml |
|