Prelab for Titration of an Antacid SD Flashcards

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created 8 months ago by BerryJamJam
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updated 8 months ago by BerryJamJam
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general chemistry i lab
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1

When excess H C l is added to the antacid tablet (C a C O3) used in this experiment, what are the products of this reaction?

Select all correct answers.

  • CO2
  • MgCl2
  • NaCl
  • CaCl2
  • H2O
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  • CO2
  • CaCl2
  • H2O

2

What is the correct order of the steps for this experiment?

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RIGHT

3
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What is the correct order of the steps for this experiment?

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WRONG

4

How will the number of moles of H C l neutralized by the antacid tablet be determined?

  • From the number of moles of N a O H added to react with excess H C l
  • Multiplying the volume of H C l added by its molarity to get moles of H C l added
  • Subtracting the number of moles of H C l neutralized by NaOH from the number of moles of H C l added to dissolve the tablet
  • By converting the mass of the tablet to moles and calculating the number of moles of H C l needed from the volume added and molarity from stoichiometry

Subtracting the number of moles of H C l neutralized by NaOH from the number of moles of H C l added to dissolve the tablet

5

A student performing this experiment weights out 0.6925 grams of an antacid tablet. It is was determined that this tablet contained 0.4800 grams of C a CO3. What is the percent C a CO3 of this tablet?

Type your answers without units.

(0.4800 grams CaCO3 / 0.6925 grams antacid tablet) x 100 = 69.31% CaCO3

Answer: 69.31

6

A student performing this experiment weights out 0.6490 grams of an antacid tablet. It is was determined that this tablet contained 0.4470 grams of C a CO3. What is the percent C a CO3 of this tablet?

Type your answers without units.

(0.4470 grams CaCO3 / 0.6490 grams antacid tablet) x 100 = 68.88% CaCO3

Answer: 68.88