Asked by Rose

Is is possible to get 100% on a percent yield?
Now, For Cup A I had :
Mass of cup water & stirrer: 67.51
mass of sodium bicarbonate: 1.00g
mass of citric acid: .76g
total mass of all: 69.27g
mass of cup, solution, stir after reaction: 68.75g
difference (CO2 mass) = 0.52

My Theoretical yield is 0.52g CO2

So am I doing this right?
0.52gCO2/0.52gCO2 x 100%= 100%
Answered by DrBob222
With good technique and good equipment, it is possible to get very close to 100%. Your theoretical yield is 0.52 and you obtained 0.52 for CO2 so that is 100% yield. If you had weighed to two more places it may (or may not) have been exactly 100%. If you use 44.01 for molar mass CO2 and 84.007 for molar mass NaHCO3, the theoretical yield for CO2 is 0.5239 g. To two significant figures your 100% is OK.
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