Effect of temperature on raction rate :: essays research papers

Effect of temperature on RXN rateFactors affecting rate of chemical reactionSurface firmament as we increase surface area, we increase the reaction rate. The more the collisions the faster the reaction.Concentration as we increase concentration we increase the reaction rate. In reaction with between gases, increasing the pressure, increase the reaction rate.Temperature as we increase the temperature, we increase the reaction rate. Raising the temperature makes particles collide more often in a original time, and makes it more likely that collision results in a reaction.Catalyst -catalyst is a substance, which travel up a chemical reaction. At the end of the reaction the catalyst is chemically unchanged.AimEffect of temperature on rate of reaction.HypothesisI predict that the rate of reaction will increase in speed by increasing the temperature, because Raising the temperature makes particles collide more often in a authentic time, and makes it more likely that collision result s in a reaction. setup required1)4 conical flasks2)An amount of HCl3)An amount of Na2S2O34)Timer (stop-watch)5)A tile with a mark (X) on it6)2 measuring cylinders7)1 drop beaker Procedure2-Use 20cm3 of water with 30cm3 of HCl3-Add the solution to 30cm3 of Na2S2O34-Put a conical flask on a tile with a mark (X) on it.5-Put the first solution in the flask.6-Put the flask in a water bath at a controlled temperature of 30C.7-Quickly enlarge the second solution and start timing8-Stop timing when you can no longer see the mark (X) on the tile.9-Repeat steps 1 to 4 but using a different temperature each time.10-The final time use the same amount but at 70C. bonny testChanging VariableTemperature (C)Constant VariablesAmount, and concentration of HCl, and Na2S2O3 ResultsTemperature/CTime/sec202825273022352040164513507ConclusionFrom my results I have concluded that temperature has a keen affect on the reaction rate of HCl and Na2S2O3, because as we see from he graph the slope is increasing gradually, this is because increasing the temperature makes particles collide more often in a certain time and makes it more likely that a collision will result in a reaction. Because there are more effective collisions, temperature has a great affect on reaction rate, if you raise the temperature by 10C the time will decrease by nearly 6 seconds indicating the increase in speed of the reaction.