Discussion Questions – Cheap Research Essays

For each graph, remember that the plot of volume vs. time represents the rate of the reaction,
therefore the data with the steeper slope has the faster rate and the data with the more gradual
slope has the slower rate. Answer the following set of questions based on YOUR graphs.
1a. For graph # 1 (Runs # 1, 2, & 3)
What was the varied factor ?
Which run # had the fastest rate ?
What was the varied factor value ?
Which run # had the slowest rate ?
What was the varied factor value ?
How did the varied factor affect
the rate ?
Were the rate results as expected ?
Yes or no and EXPLAIN
1b. For graph # 2 (Runs # 2, 4, & 5)
What was the varied factor ?
Which run # had the fastest rate ?
What was the varied factor value ?
Which run # had the slowest rate ?
What was the varied factor value ?
How did the varied factor affect
the rate ?
Were the rate results as expected ?
Yes or no and EXPLAIN
1c. For graph # 3 (Runs # 3 & 6)
What was the varied factor ?
Which run # had the fastest rate ?
What was the varied factor value ?
Which run # had the slowest rate ?
What was the varied factor value ?
How did the varied factor affect
the rate ?
Were the rate results as expected ?
Yes or no and EXPLAIN
OVER
2. List the 6 values calculated for the quantity of reaction (vol H2 / mass Mg)
Run # Quantity of reaction Run # Quantity of reaction
1 4
2 5
3 6
 Are there any value(s) that stand out as being significantly different from the others ? If
so, which one(s) ?
The ideal value for the quantity of reaction should be 1.0 L/g. That means one liter of H2
should be produced for every gram of Mg that is used in the reaction.
 Are there any value(s) that are significantly different from the ideal value of 1.0 L/g ? If
so, which one(s)?
 Can you think of any experimental reason(s) that could account for the values being
significantly different than the ideal value ?
3. Finally, discuss 3 – 4 specific sources of experimental error that could affect the results of
this experiment. For each error, explain how it would affect the experiment.