Concentration tells how much of a substance can be made to dissolve in a liquid. In most cases, these values are experimented on in 25 °C water.

The simulation tells that concentration values take the form 0.245 mol/L. The unit, mol/L, can be intimidating, but it is simply a sophisticated way of writing how much substance (mol, or moles) in how much liquid (L, or litres).

To start, write your full name.



1. Properties of concentration

Add drink mix from the shaker until its concentration is at least 1 mol/L. Now, remove approximately 1 dL of water by carefully opening the lower-right faucet. The concentration
did not change
increased by mol/L
decreased by mol/L

After this, add approximately 1 dL of water by carefully opening the upper-left faucet. The concentration
did not change
increased by mol/L
decreased by mol/L

How would you explain your observations?


RESET THE SIMULATION

2. Determining saturation concentrations

Choose sodium chloride, or table salt, from the drop-down menu. Add table salt from the shaker until the solution to the point of saturation, where any additional salt falls to the bottom instead of dissolving. The saturation concentration of sodium chloride is mol/L.

Using a similar method, find the saturation concentrations for the following ionic compounds:
mol/L for potassium chromate (yellow)
mol/L for potassium dichromate (orange)
mol/L for copper sulfate
mol/L for potassium permanganate