Lab report experiment 5.docx - Ben Kaplan Zihan Zhang...

This preview shows page 1 - 2 out of 5 pages.

Ben KaplanZihan ZhangSection #1930Introduction:In this experiment, the objective was to determine how the amount of products and reactants are related, as well as determining the percent by mass of NaHCO3in Alka-Seltzer tablets. In this lab, it is clear that limiting reagents are present. The limiting reagent in the case of this experiment is the citric acid in the Alka-Seltzer. In the Alka-Seltzer tablet, the mixture of citric acid (C6H8O7) and sodium bicarbonate (NaHCO3) is what caused the fizzing in the water. After the reaction of these two, excess sodium bicarbonate stays in order to neutralize stomach acid in order to reduce stomach pain and heart burn in those that use Alka-Seltzer.1The increasing amounts of vinegar was used in this experiment to completely react with all of the sodium bicarbonate in the Alka-Seltzer tablet. By incrementally adding vinegar to this solution, it was possible to see the effects of a limiting reactant.2 As the amount of vinegar increased in thereaction, the % by mass of NaHCO3used had also increased, starting from 31.21% at 0 mL of vinegar, to 51.79% at 35 mL of vinegar.Materials: 8 Alka-Seltzer tablets, 150 mL of vinegar, electronic balance, small beakers.Methods:To start this experiment, three small beakers were obtained. 35 mL of water was added to the first flask and the mass was recorded. An Alka-Seltzer tablet was then obtained and its mass

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 5 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
JILLROBINSON
Tags
Reagent, sodium bicarbonate

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture