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Numbers Lab - Chemistry

Numbers Lab - Chemistry. Calcium carbonate and hydrochloric acid 1 CaCO 3 + 2 HCl 1 CaCl 2 + 1 CO 2 + 1 H 2 O.

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Numbers Lab - Chemistry

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  1. Numbers Lab - Chemistry Calcium carbonate and hydrochloric acid 1 CaCO3 + 2 HCl 1 CaCl2 + 1 CO2 + 1 H2O

  2. When calcium carbonate is added to hydrochloric acid in a water solution, a chemical reaction occurs resulting in carbon dioxide, given off as a gas, and calcium chloride and water in the water solution. 1 CaCO3 + 2 HCl 1 CaCl2 + 1 CO2 + 1 H2O

  3. 1 CaCO3 + 2 HCl → 1 CaCl2 + 1 CO2 + 1 H2O You are given 10.009 grams of calcium carbonate. This amount of calcium carbonate contains 6.02 x 1022 molecules (CaCO3). Each molecule of carbon dioxide (CO2) that is given off has a mass of 7.310 x 10-23 grams. Lab Goal: If the 10.009 grams of calcium carbonate is reacted with excess hydrochloric acid: How many grams of carbon dioxide would be produced?How many molecules of carbon dioxide would be produced?

  4. 1 CaCO3 + 2 HCl → 1 CaCl2 + 1 CO2 + 1 H2O Your group needs to do three things – First, figure out some way of determining how many grams of carbon dioxide (CO2) would be produced if you measured out 10.009 grams of calcium carbonate and added it to excess hydrochloric acid. You will have to use your measuring skills and figure out a plan of action using the “scientific model” we have put together for this chapter, and then carry through with the plan. Actually do the experiment and collect data!

  5. 1 CaCO3 + 2 HCl → 1 CaCl2 + 1 CO2 + 1 H2O Second: You will need to figure out how many grams of carbon dioxide ‘should” be produced by using the figures that were given you on the third page of this PowerPoint. And finally, you will show the percent error of your lab results.

  6. 1 CaCO3 + 2 HCl → 1 CaCl2 + 1 CO2 + 1 H2O The hand-in report that you will be graded on for this lab will need to follow the following parameters: The report will be handed in tacked on to the end of this PowerPoint with your lab group name in front of the name of the Lab. All figuring will need to be shown - in metric form– all numbers in scientific notation form- all measurements with the uncertainty (the guestimate) to the proper decimal position- significant figures correctly conserved through all mathematical processes.

  7. Start with a clean plastic water bottle

  8. Measure out approximately 300 mL of 1 M HCl in a graduated cylinder.

  9. Pour into the plastic water bottle.

  10. Place bottle and hydrochloric acid on the platform of a balance beam scales. Cut a square of plastic from a plastic zip-lock baggie. Cut along the dotted line.

  11. Place the plastic square on the scale platform. Mass the bottle, hydrochloric acid, and plastic square. Record.

  12. Slowly add calcium chloride on top of the plastic square until you have as close as possible to exactly 10.009 grams of calcium chloride.

  13. Carefully fold up the two sides of the plastic square so you can handle the calcium chloride.

  14. SLOWLY and carefully pour the calcium chloride into the hydrochloric acid. It will fizzle and foam just like vinegar and baking soda so pour slowly or else it will over flow and spill. Spillage negates the experiment and you will have to start over. You will only get two do-overs and then you get a zero for the lab.

  15. After you get all of the calcium chloride into the hydrochloric acid, carefully fold up the plastic square and slide it into the bottle.

  16. Place the bottle, with the hydrochloric acid, calcium chloride and plastic square, on the balance beam scales and mass. Record.

  17. Mass in grams - mass in grams = mass in grams Mass of CO2

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