Experiment 1: Charles’ Law Data Tables and Post-Lab Assessment Table 3: Temperature vs. Volume of Gas...

Experiment 1: Charles’ Law Data Tables and Post-Lab Assessment

Table 3: Temperature vs. Volume of Gas Data

Temperature Conditions	Temperature (C)	Volume (mL)
Room Temperature
Hot Water
Ice Water

Post-Lab Questions

1. Use a pencil and graph paper to create a graph of temperature and volume data. Place temperature (remember to use degrees Celsius) on the x-axis and volume (mL) on the y-axis. Leave room on the left side of your chart for temperature values below zero.

2. What happened to the volume of gas when the syringe was exposed to various temperature conditions? Using the concepts explored in the Introduction, describe why this occurred, keeping in mind the definition of temperature.

3. Using a ruler, draw a straight line of best fit through your data points, extrapolating the line until it intersects the (negative) x-axis. Why can you assume a linear relationship (a straight-lined slope)?

4. At what temperature does your line intersect the x-axis? What volume corresponds to this temperature?

5. Would it be possible to cool a real gas down to zero volume? Why or why not? What do you think would happen before that volume was reached?

6. Is your measurement of absolute zero close to the actual value (-273 °C)? Calculate a percent error. How might you change the experiment to get closer to the actual value?

Solutions

Expert Solution

According to charle's law" volume of a given amount of gas is directly proportional to its temperature on kelvin scale when the pressure is held constant"

V T, V₁/T₁ = V₂/T₂.

Assuming practical data, as this is experimental so you should do it practically. I give you an idea :

Temperature condition	Temperature(°c)	Volume(mL)
Room temperature	26°c	1
Hot water	70°c	2.69
Ice water	2°c	.077

1) the graph between volume and temperature is a straight line. 2)

When syringe is exposed to various temperature conditions, the volume increases with increase in temperature while decreases with decrease in temperature.

You can proof it by experimenting

3) the slope of the graph is equal to ∆V/∆T.

Hence it is constant and it is the proof of Charlie's law :

V1/T1 = V2/T2

4) actually it is not possible in real world ,

But theoretically use V1/T1 = V2/T2. V2 to be zero with previous volume V1 to be known .

genius_generous answered 1 year ago

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