Factors Affecting Reaction Rate Lab
Purpose: To observe the effect of concentration, Temperature and surface area on the rate of a reaction.
Procedure: Watch the video and record the effect of changing the factors on the reaction rate.
Data and Observations
Part 1: Effect of concentration on rate of a reaction.
Complete the following data table from watching the video
Mass of magnesium is 8.5 mg
Table 1
Concentration of Acid (M) / Reaction time (s) / Reaction Rate (g Mg/s)0.5
1.0
3.0
6.0
Part 2: Effect of surface area on reaction rate
Table 2
Shape of Mg strip / Reaction time (s) / Reaction Rate (gMg/s)Test tube A-slivers
Test tube B- rolled
Test tube C- flat
Part 3: Effect of temperature on reaction rate
Table 3
Temperature 0C / Reaction time (s) / Reaction Rate (g Mg/s)Flask A
Flask B
Flask C
Flask D
Questions
1. Calculate the rate of reaction for part 1, Part 2, Part 3 using 8.5mg as the mass of the magnesium ribbon; fill the answers in the tables?
2. Graph concentration of HCl vs. reaction rate for part 1?
3. Using your graph determine what the rate of the reaction will be when the concentration of HCl is 4.5M?
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4. What shape of the Magnesium strip produced the greatest rate of the reaction, explain why?
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5. Which flask at what temperature had the greatest reaction rate?
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6. Does the rate of the reaction double as temperature double according to your observations?
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7. Would it be easier to start a fire with kindling or a log, explain your answer using collision theory?
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Conclusion
Explain the three factors you observed on reaction rate and explain how they affect the rate of the reaction in each part of the lab.
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