Preview - Stoichiometry - Creating A Fizzy Drink Part 1

Varying the Amounts

The simulation below models the same reaction your instructor demonstrated, but now you have control over the amounts of both reactants being used.

 

Directions:

  1. Adjust the slider bars to vary the amounts of each reactant (Mg and HCl) as instructed in the table below.
  2. Then press "setup". The values you've selected for each reactant will now appear in the box at right. Moles of magnesium are represented by the grey circles and moles of hydrochloric acid (HCl) are represented by the green circles in the blue rectangle.
  3. Now press "go" and observe how much H2 gas is produced with each combination of reactants. All amounts are again measured in moles.

 

 

 

Questions

Please answer the questions below.

Record the amount of hydrogen gas produced in each reaction in the table below.

Did any of the reaction combinations produce the same quantity of hydrogen gas (within 0.2 moles)? If so detail which combinations of magnesium metal and hydrochloric gas below.

Did any of the reaction combinations leave unreacted excess magnesium? Unreacted excess magnesium is grey circles leftover on the bottom of the container when all green circles of hydrochloric acid have disappeared because they reacted. If so detail which combinations of magnesium metal and hydrochloric gas below.

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.