Avogadro's Law Experiment
Becca DeHaven
ChemC-125
Avogadro’s Law Experiment Report
Introduction:
The following experiment’s purpose was to confirm Avogadro’s Law and experimentally determine the Universal Gas Constant “R”. Amedeo Avogadro hypothesized that all gases of equal volume, temperature and pressure would contain equal amounts of moles. This idea that volume is directly proportional to moles sprung from other similar hypotheses. Robert Boyle found that pressure and volume are inversely proportional, meaning as pressure increases, volume decreases and visa versa. P1V1=P2V2 (1) …show more content…
V1T2=V2T1 (2)
The findings of these men brought Avogadro the evidence he needed to prove his hypothesis and discover the Ideal Gas Law. PV-nRT (3)
The discovery of the Ideal Gas Law also included the birth of the Ideal Gas constant “R”. R’s value is approximately .0821 L x atm./K x mol. To verify Avogadro’s gas constant R this experiment combined various amounts of NaHCO3 (limiting reagent) with excess CH3COOH to produce various volumes of CO2 gas. By using NaHCO3 as the limiting reagent, the experiment was able to conduct multiple trials with varying amounts of NaHCO3 to best test Avogadro’s theory. NaHCO3(s) + CH3COOH(aq) → NaCH3COO(aq) + CO2(g) + H2O(l) (4)
By plotting this data in a graph and deriving the best-fit line equation, it was possible to obtain an R-value that is in line with that which Avogadro found. …show more content…
moles, grams of reactant used, etc.) there may have slight errors. These errors may be due to deviations from rounding, calculator errors, personal error, or equipment errors. All these factors together can skew data and make the final results differ from the theoretical values. To account for these errors, the experiment should be performed multiple times and the results of each experiment compared to see which would be most accurate. There may also have been slight errors when recopying or recording the data. An error involving a wrong number or incorrectly placed decimal could go unnoticed if it is not obviously an outlier. These errors would cause further calculations to possibly be too high or too low and skew the end results of the
ChemC-125
Avogadro’s Law Experiment Report
Introduction:
The following experiment’s purpose was to confirm Avogadro’s Law and experimentally determine the Universal Gas Constant “R”. Amedeo Avogadro hypothesized that all gases of equal volume, temperature and pressure would contain equal amounts of moles. This idea that volume is directly proportional to moles sprung from other similar hypotheses. Robert Boyle found that pressure and volume are inversely proportional, meaning as pressure increases, volume decreases and visa versa. P1V1=P2V2 (1) …show more content…
V1T2=V2T1 (2)
The findings of these men brought Avogadro the evidence he needed to prove his hypothesis and discover the Ideal Gas Law. PV-nRT (3)
The discovery of the Ideal Gas Law also included the birth of the Ideal Gas constant “R”. R’s value is approximately .0821 L x atm./K x mol. To verify Avogadro’s gas constant R this experiment combined various amounts of NaHCO3 (limiting reagent) with excess CH3COOH to produce various volumes of CO2 gas. By using NaHCO3 as the limiting reagent, the experiment was able to conduct multiple trials with varying amounts of NaHCO3 to best test Avogadro’s theory. NaHCO3(s) + CH3COOH(aq) → NaCH3COO(aq) + CO2(g) + H2O(l) (4)
By plotting this data in a graph and deriving the best-fit line equation, it was possible to obtain an R-value that is in line with that which Avogadro found. …show more content…
moles, grams of reactant used, etc.) there may have slight errors. These errors may be due to deviations from rounding, calculator errors, personal error, or equipment errors. All these factors together can skew data and make the final results differ from the theoretical values. To account for these errors, the experiment should be performed multiple times and the results of each experiment compared to see which would be most accurate. There may also have been slight errors when recopying or recording the data. An error involving a wrong number or incorrectly placed decimal could go unnoticed if it is not obviously an outlier. These errors would cause further calculations to possibly be too high or too low and skew the end results of the