Chemical Forums
Specialty Chemistry Forums => Chemical Engineering Forum => Topic started by: Gerard on September 12, 2008, 06:38:37 AM
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i was experimenting the absorption of CO2 in water using Packed Bed Column with rascvhig rings as packing, to dtermine CO2 in air i use HEMPL Gas analyzer while to determine CO2 in water i use titration with a base,my problem is that when i calculated for the change in x and y there was a negative results why is it so?
here are me data.
X2(Sumptank X)
1.4663x10-5
2.1994x10-5
2.1994x10-5
2.2518x10-5
2.3042x10-5
x1(downcoming x)
1.8329x10-5
2.1994x10-5
2.2518x10-5
1.9900x10-5
2.4613x10-5
to find the change in x i have to: x1-x2 (out minus in)
but you can find that there are negative values,,,why?
in terms of y
my inital CO2 in air is 0.0663
while my CO2 in the experiment was 2L/min CO2 in 30 L/min air
Y2
0.01
0.015
0.0525
0.0625
0.07
0.0675
0.0625
0.0625
0.0625
0.0625
to determine the change in y i have to Y1-Y2 (again in minus out)
but there are still negative values here, how can i correct these to get a positive graph?