Concentration and How It Affects The Rate of Reaction According to our findings and the collision theory, concentration clearly affects the rate of reaction. The volume of sodium thiosulphate will remain unaffected throughout the whole experiment, Where as I will be changing the concentrations of hydrochloric acid.
With the cup and its contents still on the balance, drop the antacid tablet into the cup. This error occurred from not adding the correct amount of solutions to each beaker, throwing off the absorption rate and then the calibration curve. I facilitated the design of the experiment by asking my students a series of questions that were meant to feel like it was a genuine conversation happening between scientists interested in answering a question.
Place them into 4 different test tubes5. Gather 4 x 3 test tubes and place them in the test tube rack. Definition: The rate of a chemical reaction is defined as the change in the concentration of one of the reactants or products in unit time.
After the starch dissolves mix 8g of amylase with 8ml of diluted water, 9. The precise temperature for this reaction to occur is 37 degrees celsius. Conduct the experiment 2 more times 3 in total to have reliable results.
The calibration curve was constructed by measuring the absorbance rate of phosphate in five standard solutions. This is because by increasing the concentration of the reactant you increase the number of molecules of the reactant which, in turn, increases the frequency of the collisions.
This reaction and the implementation of this natural clock can be seen below in a Flinn video2. When the reaction completes, record the final mass of the cup, water, and tablet on Line Q of Table