Volume And Pressure Lab Report

The purpose of this investigation was to demonstrate a relationship between change in volume and pressure. It kept the room temperature, room humidity, and mix of particles constant so that only the volume influenced the pressure. 10 tests were conducted with the volume beginning at 60 mL and decreasing at equal intervals of 4 mL, ending at 20 mL and each test had 3 trials so that the average represented a more accurate result. The results of each trial were recorded in Table 1. Then, the averages for each test were calculated and recorded in Table 2. The results were then transferred to Graph 1, which displays the effect of change in volume on pressure and illustrates the inverse relationship between the variables. Graph 2 demonstrates 1/volume versus pressure, and should have a linear best fit line that goes through the origin. However, due to the line of best fit not going through the origin, it is indicted that there are random and systematic errors. Graph 3 demonstrates pressure times volume versus pressure and should be a horizontal line. However, the best fit line in Graph 3 is not horizontal, further suggesting random and systematic errors.

Random errors are caused by unknown and unpredictable changes in the

The system in which the experiment took place was mostly closed, so neither the composition nor number of particles changed throughout the experiment. However, there was a possibility that the humididty and temperature were not definitely controlled, despite measures taken to keep them controlled, such as keeping doors and windows closed and controlling the temperature with the air conditioner and the material of the Ideal Gas Law being plastic, which is a poor conductor. Another weakness in this lab was that it was difficult to push the syringe at the same speed for each test, due to the increasing pressure, which at the smallest volumes made it difficult to push the syringe at