Effect of temperature on raction rate :: essays research papers

Effect of temperature on RXN pastureFactors affecting rate of chemical answer stand up area as we increase surface area, we increase the reaction rate. The to a greater extent the collisions the faster the reaction.Concentration as we increase concentration we increase the reaction rate. In reaction with between gases, change magnitude the pressure, increase the reaction rate.Temperature as we increase the temperature, we increase the reaction rate. Raising the temperature makes particles collide more oft in a current time, and makes it more likely that collision pull up stakess in a reaction.Catalyst -catalyst is a substance, which speed up a chemical reaction. At the end of the reaction the catalyst is chemically unchanged. induceEffect of temperature on rate of reaction.HypothesisI predict that the rate of reaction will increase in speed by change magnitude the temperature, because Raising the temperature makes particles collide more often in a received time, and makes i t more likely that collision results in a reaction.Apparatus ask1)4 conical flaskfuls2)An union of HCl3)An amount of Na2S2O34)Timer (stop-watch)5)A roofing tile with a contain (X) on it6)2 measuring cylinders7)1 repeal 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 add the second solution and start timing8- bank check 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.Fair testChanging variableTemperature (C)Constant VariablesAmount, and concentration of HCl, and Na2S2O3 ResultsTemperature/CTime/sec202825273022352040164513507ConclusionFrom my results I have concluded that temperature has a great affect on the reaction rate of HCl and Na2S2O3, beca use 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.