| In this simulation the volume of water in two 2 litre beakers is measured as it is transferred back and forth as described in the following procedure. |
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1. One of the beakers is labelled as reactants, and one as products. The reactant beaker is filled with water.
2. Carefully, so as not to spill any water (remember equilibrium requires a closed system!), two persons simultaneously scoop as much water from each large beaker as they can using a 250 mL beaker. They pour it into their partner's large beaker, at the same time. Of course one of them will have no water to begin with, but as the reaction proceeds, this will soon change.
3. Every time they pour, they measure the volume of the water in each beaker, and record in a data table. They continue until they have reached an "equilibrium", which takes about 20 to 25 trials.
4. The procedure is repeated, except the second time the water is placed in the products beaker. For the last trial, they use the 250 mL beaker in the reactant beaker, and the 100 mL beaker for the products beaker.
These are the results obtained.
Set 1: Water starts in reactant beaker
Set 2: Water starts in product beaker
Set 3: 250 ml (reactants) and 100 mL (products) beakers used as scoops
| Plot a graph for each set of data. On each graph label the vertical axis as "Concentration", and the horizontal as "Time". Plot the height or volume as if it were the concentration. |
Scientific graphing |
| Then use the graph to answer the following questions: |
Analysis Questions |
