Boyle's Law | Chemistry |

background [prelab assignment (10 points) due at the beginning of the lab

1. describe / rationalize the use of graphical analysis to determine the # moles of gas in the system & volume of the tubing.

hints:

- what is the ideal gas equation (it incorporates Boyle's law) ?
- what is the relationship between the volume term in the ideal gas equation, the volume of the tubing, and the volume of the syringe ? hint: see below figure

- "combine" both of the preceding equations (i.e. solve for the volume term in both of the preceding equations, then apply the transitive property), then solve for the volume of the syringe.
- identify the constants (i.e its value does not change during the experiment) and variables (i.e. its value does change during the experiment) in the preceding equation; there are 2 variables
- visualize the graph of the preceding equation, which would be a line if the variables are defined appropriately.
- relate the parameters of the equation describing the graph to (i) the number of moles of gas in the system and (ii) the volume of the tubing.
2. sketch a data table for your experimental measurements (i.e. review the purpose & content of your lab report)

purpose

determine the volume of the tubing

determine the number of moles of gas in the system

fulfill various aspects of the NGSS science & engineering standards.

materials

syringe; tubing; pressure transducer; data collection system; thermometer

methods / data analysis

student design

Content of lab report (40 points)

introduction [10 points]

- basis of determining the volume of the tubing & number of moles of gas in the system using graphical analysis; use equation editor and appropriate mathematics style (see below link about writing mathematics)
methods [5 points]

- self-explanatory
results [10 points]

- graphs: V vs. P; V vs. 1 / P
- determination of the volume of the tubing & # moles of gas in the system
discussion [15 points]

- is the experimental data consistent with Boyle's law ? Justify your answer by referring to
bothgraphs (relationship between pressure versus volume; 1 / P versus V).- describe / list two high school

- NGSS science & engineering practices
that correlates to an aspect of this laboratory activity;and

provide an example in the lab or this lab report that meets these practices. include in-text citation & a bibliography / refererence list.resources

lab activity source (examples): site 1 & site 2 [access 4 / 2009]

above image

writing mathematics