How Much Co2 Lab

1228 WordsMay 30, 20135 Pages
Experiment 10: How much CO2? Introduction The goal of this lab was to determine the amount of grams of sodium bicarbonate (NaHCO3) required to produce enough CO2 gas to completely fill the lab and also how many Alka-Seltzer tablets that would equate to. This was done by collecting CO2 gas by inverting a buret and submerging it under water in order to calculate the volume of CO2 released from a fragment of Alka-Seltzer tablet. The main component of Alka-Seltzer is sodium bicarbonate, used to neutralize excess stomach acid during illness through the following reaction that generates CO2: HCO3- + H+(aq) H2CO3(aq) CO2(g) + H2O Experimental: An Alka-Seltzer tablet was accurately weighed and recorded using a weighing boat and analytical…show more content…
To use the ideal gas law, the atmospheric pressure was adjusted for due to the lower pressure in the buret when compared to the outer atmospheric pressure. This unequalization of pressures, although corrected, may still be slightly off, thus potentially causing later calculation error when using the ideal gas law to solve for the moles of CO2. Difficulties in the experiment arose when inverting the buret and completely submerging it into the beaker of water. This is a likely place for error because

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