Adrien Schmitt
Mr. Sanders
January 19, 2022
Chapter 7B
The amount of NaHCO3 in Alka-Seltzer
4. Weight of beaker, vinegar, and watch glass.
242.8 g
5. Weight of beaker, vinegar, watch glass, and tablet.
246.1 g
11. Weight of beaker, watch glass, and solution after the reaction.
242.8 g (spilt solution)
12. Mass of the tablet.
3.3 g
13. Mass of CO2 that escaped.
0.7 g
14. Moles of CO2
0.7 g / 44.0 g = 0.016 mol of CO2
15. Moles of NaHCO3
0.016 mol of CO2 x 1/1 = 0.016 mol of NaHCO3
16. Mass of NaHCO3
0.016 mol x 84 = 1.336 g
17. Percentage of NaHCO3 in the tablet
1.336 / 3.3 = 41%