Data: Table 2: Class Data Total Total mass of mass of Mass of beaker beaker Volume Volume Mass of Alka and and Mass of % NaHCO3 in of of beaker Seltzer contents contents Mass NaHCO3 tablet (mass Vinegar Water & liquid tablet before after rxn of CO2 in tablet NaHCO3/mass (mL) (mL) (g) (g) rxn (g) (g) lost (g) tablet) X 100 0.00 40.00 197.9 1.68 199.29 0.29 5.00 35.00 147.04 1.36 148.10 0.30 10.00 30.00 194.43 1.35 195.41 0.37 15.00 25.00 196.6 3.20 197.75 0.52 20.00 20.00 197.95 2.02 99.32 0.63 25.00 15.00 145.07 2.13 146.24 0.62 25.00 15.00 147.42 1.65 148.65 0.48 30.00 10.00 147.21 1.83 148.50 0.55 Analysis Questions: Why must the mixture in the beaker be stirred after the reaction is completed? Which substance (Alka-Seltzer OR Vinegar) do you think was used up in the reaction? Explain why. Explain TWO sources of error that could have occurred in this lab and how each would affect the results. On the back, create a bar graph using the % of reacted NaHCO3 (Y-axis) versus the volume of vinegar used X-axis) to determine if you were correct in your identification of the limiting reactant in this reaction. Be sure to include a title, key and label your X & Y AXIS. Look at the class data for % NaHCO3 vs. mL vinegar used. What trend do you notice?
Data: Table 2: Class Data Volume of Vinegar (mL) Volume of Water (mL) Mass of beaker & liquid (g) Mass of Alka Seltzer tablet (g) Total mass of beaker and contents before rxn (g) Total mass of beaker and contents after rxn (g) Mass of CO2 lost Mass of NaHCO3 in tablet (g) % NaHCO3 in tablet (mass NaHCO3/mass tablet) X 100 0.00 40.00 197.9 1.68 199.29 0.29 5.00 35.00 147.04 1.36 148.10 0.30 10.00 30.00 194.43 1.35 195.41 0.37 15.00 25.00 196.6 3.20 197.75 0.52 20.00 20.00 197.95 2.02 99.32 0.63 25.00 15.00 145.07 2.13 146.24 0.62 25.00 15.00 147.42 1.65 148.65 0.48 30.00 10.00 147.21 1.83 148.50 0.55 Analysis Questions: Why must the mixture in the beaker be stirred after the reaction is completed? Which substance (Alka-Seltzer OR Vinegar) do you think was used up in the reaction? Explain why. Explain TWO sources of error that could have occurred in this lab and how each would affect the results. On the back, create a bar graph using the % of reacted NaHCO3 (Y-axis) versus the volume of vinegar used X-axis) to determine if you were correct in your identification of the limiting reactant in this reaction. Be sure to include a title, key and label your X & Y AXIS. Look at the class data for % NaHCO3 vs. mL vinegar used. What trend do you notice?