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06.04 Reaction Rates and Temperature Laboratory
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06.04 Reaction Rates and Temperature Laboratory
laney kay
How does an increase in concentration affect a chemical reaction?
Pre-Lab Questions
When the concentration of the reactant(s) increase more molecules/ions interact in order to form new compounds, and how fast that the reaction will increase.
When concentration of a reactant will decrease, there are less of that molecule/ion present, and the speed/rate of reaction will decrease.
When temperature increases, what happens to the molecules in a chemical reaction?
question 2
when the temperature increases the speed at which the molecules move rapidly increases.
How do we measure the average kinetic motion of molecules in a solution?
by the temperature i believe. i couldn't find the answer in the lesson.
Question 3
Hypothesis
welcome to the lab.
if the temperature increases, then the length of time it takes for the antacid tablets to dissolve decreases because i believe the hotter the temperature, the tablets will begin to melt speeding up the process.
Materials
4 antacid tablets
2 clear cups labeled Hot and Cold
Water
Timing device
Materials
procedures
1.Observe the experiment in the virtual lab window. 2.Record the time for each trial of the experiment.
procedures
Trial 1
the reaction completed at 36.28 seconds for hot water and 65.68 seconds for cold water.
Trials
Trial 2
the reaction completed at 34.98 seconds for hot water and 70.72 seconds for the cold water
Trial 2
Graph
Question 1:
Post lab questions
Review your data. Did your experiment support your hypothesis? Support your answer with data from your experiment.
My hypothesis was supported. I stated that as the temperature rises the antacid would dissolve faster. When i watched the lab i saw that the hot water was around 30 seconds and the cold was around 60.
Question 2:
Question 2
How did the temperature affect the time it took for the antacid tablet to dissolve?
When the temperature got higher the tablet would dissolve a lot faster. Like i said earlier the hot water came to around 30 seconds, while the cold got to 60.
Question 3:
What evidence indicates that a chemical reaction took place?
the dissolving and bubbling
Question 3
Question 4:
Question 4
Predict what would happen if the same experiment was conducted with different amounts of water.
i predict that if the amount of hot water was larger, it would take the exact same amount of time, as well as the cold water. I believe this because the tablet is already dissolving at a certain rate placed in lets say room temperature water. Just because you add more and more water to it isn't gonna speed it up. The same goes for hot and cold water.