881 Words4 Pages

1. Does the ideal Gas Law do a reasonable job at predicting the behavior of the gas undergoing changes in temperature, pressure, and volume? Justify your answer with supporting evidence.
Considering most gases don’t follow the ideal standards of the Ideal Gas Law, the law itself still provides reasonable calculations in predicting the behavior of gas. As long as we were able to identity two out of the three unknown variables, we could use the formula: PV=nRT to calculate the unknown value.
2. With regards to the actual procedure, what were the advantages and disadvantages to the gas law method.
Advantages:
-The lab quest gave us on point readings and measurements without human error
-With each method, it is easy to replicate*…show more content…*

The R-squared value shows us the correlation between the two variables in each graph that we were comparing. A consistent, precise R-squared value would be ideally 1. In all three cases, only one of our methods gave us this result: Titration. So given our results titration was the most precise method. But, our Ideal Gas Law method was more precise than crystallization from the previous week due to our newly found R-squared value of 0.8909. Our crystallization method only gave us a R-squared value of only 0.7735 which was the farthest value from*…show more content…*

We made this inference due to our slope of each of the graphs. Given the mole ratios, the slope of our newer lab, comparing H2 to moles of Mg, should’ve been a slope of 1. But our first point skewed our results giving us an actual slop of 0.7, which was short from a more accurate result. And given our results last week, we concluded that our titration method was more accurate than our crystallization method due to the basically perfect slope of 2.0018 which is very close to the theoretical slope of 2. 5. How does the mole ratio of H2 produced to Mg reacted compare to the charge on the Mg ion after reacting with HCl? The mole ratio of H2 is 1:1 and the charge of Mg after the reaction is 2+. In regards to comparing these two things, the mole ratio is half of what the charge of the Mg ion after reacting with HCl. 6. Based on your results, which of the three methods would be better for determining the charge on a metal ion reacting with HCl? Explain

The R-squared value shows us the correlation between the two variables in each graph that we were comparing. A consistent, precise R-squared value would be ideally 1. In all three cases, only one of our methods gave us this result: Titration. So given our results titration was the most precise method. But, our Ideal Gas Law method was more precise than crystallization from the previous week due to our newly found R-squared value of 0.8909. Our crystallization method only gave us a R-squared value of only 0.7735 which was the farthest value from

We made this inference due to our slope of each of the graphs. Given the mole ratios, the slope of our newer lab, comparing H2 to moles of Mg, should’ve been a slope of 1. But our first point skewed our results giving us an actual slop of 0.7, which was short from a more accurate result. And given our results last week, we concluded that our titration method was more accurate than our crystallization method due to the basically perfect slope of 2.0018 which is very close to the theoretical slope of 2. 5. How does the mole ratio of H2 produced to Mg reacted compare to the charge on the Mg ion after reacting with HCl? The mole ratio of H2 is 1:1 and the charge of Mg after the reaction is 2+. In regards to comparing these two things, the mole ratio is half of what the charge of the Mg ion after reacting with HCl. 6. Based on your results, which of the three methods would be better for determining the charge on a metal ion reacting with HCl? Explain

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