Lab Report Essays

655 WordsMar 30, 20133 Pages
McLean 1 Creating Acetylene Gas Introduction The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel, which leaves a clean test tube. Incomplete combustion is the reaction of an element or compound with oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react…show more content…
For the test tube with the ratio of Acetylene to air is 1:3, a flame traveled down a test tube even slower, there was a slight popping noise and black residue . For the test tube with the ratio of Acetylene to air is 1:7, a flame traveled quickly down a test tube, popping noise and less black residue. Refer to table 1 for the specific lab results. Table 1 Observations of Reactivity's |Amount of Acetylene in Test tube |Ratio |Observations | | |(Acetylene:Air) | | |1/2 |1:1 |Flame traveled down test tube, slight pop, | | | |black residue | |1/3 |1:2 |Pop sound, flame traveled down test tube | | | |(slower) | |1/4 |1:3 |Pop sounds, flame traveled down the test | | | |tube

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