Preview - Stoichiometry - Creating A Fizzy Drink Part 1

Experiment 1

Mg (s) + HCl (aq)  ----->  MgCl2 (aq)   +   H2 (g) 
bracket   bracket
Reactants   Products

 

  1. Place a weighing boat on your balance and zero it out.
  2. Measure out 0.2 g of magnesium in the weighing boat.
  3. Record the mass of a 125 mL Erlenmeyer flask.
  4. Measure out 15 mL of 0.5 M HCl in a 25 mL graduated cylinder.
  5. Pour the 15 mL of 0.5 M HCl into the flask and record its mass.
  6. Subtract the mass of the flask itself to determine the mass of the HCl only.
  7. Add the mass of the Mg and the HCl, record this total mass below. (This is the total mass of your reactants.)
  8. Separate a small square of parafilm from its backing paper and record its mass.
  9. Pour the Mg from the weighing boat into the flask full of HCl (still on the balance), then immediately cover the flask with parafilm so no gas is allowed to escape.
  10. Place the flask (still covered with parafilm) back onto the balance.
  11. Subtract the mass of the flask + the parafilm from the mass on your balance, then record that mass. (This is the total mass of your products.)
  12. Record any observations of what occurred during the chemical reaction below. Observations include describing what happened during the reaction and noting differences between the reactants and products.
  13. Dump the contents of the flask down the appropriate drain, rinse it out, and place it on the drying rack.

Questions

Please answer the questions below.

Record your data from Experiment 1: Mg (s) + HCl (aq) → MgCl2 (aq) + H2 (g)

Record your observations from Experiment 1: Mg (s) + HCl (aq) → MgCl2 (aq) + H2 (g)

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.