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effect of temperature on rate of reaction
effect of temperature on rate of reaction
effect of temperature on rate of reaction
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Background Information:
Carbon Dioxide is simply made by the reaction of sodium bicarbonate and vinegar.
When vinegar with high temperature meets the sodium bicarbonate, the molecules inside of the flask move actively around the space because they gain kinetic energy. When moving around the space, the molecules mix and react with each other faster making a big chemical reaction. Through this, the bung pops faster due to the actively moving molecules inside the hot temperature flask, which is similar to the movement of gas in the kinetic theory. On the other hand, when the vinegar with low temperature meets the sodium bicarbonate, the molecules do not mix well and react slowly to each other because the molecules are closer to each other like solids in the kinetic theory. By this, the bung pops up slower in the low temperature flask due to the not actively moving molecules. This idea is referred to as the Endothermic Process Na2CO3(s) + H2O (l) +CO2 (g)> where both the hot and cold temperature absorbs its heat making a chemical reaction. < CHEMISTRY TEXTBOOK pg. 538 – Endothermic Process>
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How will the changes in temperature of the vinegar influence the time period for a chemical reaction?
Hypothesis:
If the temperature of the white vinegar (acetic acid) is higher, then the rate of reaction will occur faster when touching the sodium bicarbonate because due to the molecules moving actively in hot temperatures, the amount of carbon dioxide may form more quickly inside the flask leading the bung to pop faster.
Variables:
Independent Variable Dependent Variable
The Temperature of Vinegar ℃ Time taken for the bung to pop
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In order for the reaction to occur properly, the bicarbonate ions must react with the hydrogen ions in perfect synchrony. This is where the effect of water temperature comes in: the higher the temperature, the faster the molecules move, and the lower the temperature, the slower they move. (Higher water temperatures would increase the likelihood of the bicarbonate and the hydrogen ions coming into contact with each other in accordance, which would in turn cause the Alka Seltzer to dissolve
It was then placed in the ice bath, in which immediately the can slightly collapse on itself. In part two of the experiment, the prepared ice bath temperature measured at 1°C (T2). While the heated bath temperature stabilized around 85°C (T1) after 5 minutes, where it also began to simmer. The test tube with the rubber stop in the heated bath had no water for the entire 5 minutes. When the test tube was placed inside the ice bath for 5 minutes water appeared to flow inside the test tube. The amount of water that flowed into the test tube measured at 5 mL (Vw). When determining the volume of the test tube in the 100 mL graduated cylinder with 30 mL of water, it displaced the water up to 74 mL. Thus determining the volume of the test tube as 34 mL
Investigation to find out if changes in concentration of acid affect the rate of a chemical reaction
will result in an increase in the speed of the rate of reaction it has
A hot plate is acquired and plugged in and if left to warm up. Fill two beakers with 0.075kg of water and record the temperature using a thermometer and record it. Place one of the beakers onto the hot plate and drop one of the metal objects in. Wait for the water to boil and wait two minutes. Take the object out of the water and drop it into the other beaker. Take the temperature of the beaker and record the rise in temperature.
has on the rate of reaction. I will do this by recording the time it
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