Search words: chemical reactions, Avagodro's numbers, mole, lab lesson plan, stoichiometry, chemistry calculations.

PURPOSE:
To compare the experimental mass to the theoretical mass of a product of a chemical reaction.

Given the mole relationships in a balanced chemical equation, and the mass of one of the reactants, it is possible to determine the number of moles of every other substance taking part in the reaction.

In this experiment, you will investigate the following chemical reaction:

NaHCO3(s) + HCl(aq) ------> NaCl(aq) + CO2(g) + H2O(g)

A known mass of sodium hydrogen carbonate will be reacted with excess hydrochloric acid. Knowing the mass of sodium hydrogen carbonate that reacts, you can determine from the balanced equation the mass of NaCl that should be produced. You can compare this theoretical value with the actual experimental mass of NaCl produced.

MATERIALS AND EQUIPMENT:
Balance, Medicine dropper, Bunsen burner, Ring stand, Evaporating dish, Iron ring, Watch glass, Wire gauze, Microspatula, Lab apron, Safety goggles, 13 x 100 mm test tube, 6M HCl, Sodium hydrogen carbonate

Your download will include a lab that is ready to be copied and passed out to your students. It will include Title, Purpose, Introduction, Safety Precautions, Procedure, Data Table, and Follow Up Questions. You can choose to have your students write their own lab report or use the included student data sheets.

All answers are included.

You will receive both an editable Word document as well as a pdf form of the lab.

© Amy Brown – Science Stuff