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CHEM 110 Cuyamaca College Limiting Reagent of Solutions Lab Report

CHEM 110 Cuyamaca College Limiting Reagent of Solutions Lab Report

Question Description

I’m studying and need help with a Chemistry question to help me learn.

  • Part A
    • Experimental data table and calculated results
    • Limiting reagent
    • Balanced equation with states
  • Part B
    • Record observations
    • Fill out a copy of the table on page 37 of the lab manual (copy in excel).
    • Limiting reagent
    • Balanced equation with states
  • Discussion Questions
  • Calculation
  • Moles CaCl2, Na2CO3, limiting reagent found through calculation, theoretical moles CaCo3, Actual mass of CaCo3, percent yield CaCO3.
    • Sig figs. Beaker versus graduated cylinder for reagents. Avoid rounding error.
    • Percent yield=actual*100/theoretical
    • Consistent units
      • What factors can contribute to a low percent yield?
      • What factor contribute to a high percent yield?
    • Units are important for unit analysis.
    • Finding the limiting reagent:
    • Moles reagent*(moles product/moles reagent)=moles product
    • Reagent that leads to the least moles product= limiting reagent
    • Finding theoretical yield (g):
    • Moles product based on limiting reagent grams product
    • Finding actual yield (g):
    • (Mass of watch glass+filterpaper+precipitate)- (mass of watch glass +filter paper)
    • Pay attention to molarity when determining the limiting reagent

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