Today we tested for a potentially large error in analyzing the efficiency of our reactors: whether the desired reaction was occuring. Since we only see the final composition of the gas from the GC, we cannot be certain if Hydrogen is being turned into water and condensing onto the pipes (therefore not being represented) or even turning back into Hydrogen. Since we have a gas mixtures of CO, CO2, and H2 we could be seeing a spike in CO without the original gas being used for any reaction if an auxiliary reaction (2CO2 + 2H2= 2H2O + 2CO) produces more CO. To test for this and account for the error, we ran pure H2 and CO2 through the machine with the current reactor to determine the rate that this reaction would occur in the reactor at varying temperatures. We can then use this as a maximum baseline error, since under the normal conditions there will be less likelihood of this reaction occuring since the desired reaction is taking place and using the necessary gas molecules.