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Unformatted text preview: III. Experimental Results Trial Mass of tablet Moles of NaHCO 3 (CO 2 ) % NaHCO 3 1 1.65 g 0.00087 4.42% 2 1.44 g 0.00074 4.34% 3 1.23 g 0.00068 4.65% The average percent sodium bicarbonate was 4.47% ± 0.16 IV. Wet Sample The mass of the tablet would increase if exposed to a high humidity atmosphere for several hours. The tablet would absorb some water, therefore making it heavier and altering the experiment. V. Partial Pressure of Water Dalton’s law of partial pressures states that the total pressure exerted by a gaseous mixture is equal to the sum of the partial pressures of each individual component in the gas mixture. or where represent the partial pressure of each component We accounted for this law by using 1 atm in the equation to solve for the number of moles of CO 2 formed....
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This note was uploaded on 06/15/2011 for the course CH 116 taught by Professor March during the Spring '09 term at University of Alabama at Birmingham.
- Spring '09