Label the beakers: Sodium Thiosulphate, Hydrochloric acid: 20%, Hydrochloric acid:60%, Hydrochloric acid: 80% and Reaction. Use cylinders for the solution and water, measure and add the required amounts of sodium Thiosulphate and distilled water to each beaker. Be as accurate as possible. With a marker draw a large “X” on a piece of paper and keep this piece of paper for later in the experiment. Prepare the Sodium Thiosulphate solution.
The Effect of Increasing or Decreasing the Concentration of HCL on the Speed of Reaction between HCl and CaCO3 Coursework HCl + calcium carbonate ® calcium chloride + carbon dioxide + water. HCl(aq) + CaCO3(s) [IMAGE]CaCl2(aq) + CO2(g) + H2O(l) Aim The aim is to investigate the effect that increasing or decreasing the concentration of the HCL has on the speed of reaction, between HCl + CaCO3. We will determine the speed/ rate of reaction by measuring the amount of CO2 given off in a set time. Equipment Ÿ Tub of water Ÿ 2 measuring cylinders Ÿ 3 test tubes Ÿ Test tube rack Ÿ Top pan balance Ÿ Stand + clamp Ÿ Spatula Ÿ Piece of card Ÿ Delivery tube Method First I will prepare the experiment by collecting all of the necessary equipment and preparing it. Then I will measure out the correct amounts of HCL and CaCO3(s) using a measuring cylinder for the HCL and the scales to measure the CaCO3(s) .
Set up the Diagram 2. Put the test tubes of Sodium Thiosuphate into the beaker above the Bunsen burner 3. Put a thermometer into it 4. Remove the test tube once its reached the desired temperature and pour contence into the empty beaker 5. As you begin to pour the test tube of Hydrochloric Acid contence into the beaker start the stop clock 6.
The Effect of Concentration of Hydrochloric Acid on Sodium Thiosulphate In this experiment I intent to investigate the effect of concentration of hydrochloric acid on Sodium Thiosulphate. When mixed together, these form a yellow precipitate. We are going to time the reaction time for this experiment [IMAGE] Na2 S 2 O3 + 2HCl 2 NaCl + S + H2O + SO2 Equipment Needed To do the experiment, I will need the following equipment: · Hydrochloric Acid · Sodium Thiosulphate · White Paper square with 'X' marked upon it · A conical flask · Measuring cylinders · Beaker · Water · Stopclock Method 1. Beaker filled with Sodium thiosulphate 2. Hydrochloric Acid bottle fetched 3.
Fair test To make sure it was a fair test. i had to constantly keep cleaning and washing the equipmentas any remaining substances can cause major differences in the results. And we had to try ansd hope that the room temperature will remain constant during the course of my experiment. Also we always have to keep the volume of concentrstion the same - 55ml. number and range of experiments - If I have enough time, I would like to try around nine different concentrations of sodium thiosulphate with water.
Once the sodium thiosulphate is the right temperature, take it out of the water, wipe the bottom of the flask with tissue paper and place it onto the piece of paper with ‘X’ marked on it. Now measure 5cm³ of hydrochloric acid in the measuring cylinder. Then pour the hydrochloric acid into the sodium thiosulphate, at this moment start timing with the stopwatch and keep timing until you cannot see the ‘X’ mark through the liquid. Make sure you wear safety glasses and handle the acid carefully. Fair Test: To make this investigation fair you have to make sure you use the same concentration of hydrochloric acid for all experiments.
The Factors Controlling the Rate of the Sodium Thiosulphate and Acid Reaction Planning I am investigating the factors controlling the rate of thiosulphate / acid reaction. The reaction that will be taking place will follow the rate at which sulphur is formed in the reaction of sodium thiosulphate with dilute hydrochloric acid. In the experiment the sulphur will appear as an extremely fine precipitate. This will slowly be followed by a milky appearance in the reaction mixture in the conical flask. As the amount of the sulphur in the mixture increases, the precipitate will become milkier.
Using a set of scales I weighed out 14.625 grams of sodium chloride on a piece of filter paper 2. I then transferred the sodium chloride in to a 250ml beaker. 3. I then rinse the filter paper with distilled water to make sure that all the sodium chloride was in the beaker by collecting the washings. 4.
Investigating How Quickly Amylase Breaks Down Starch With Varying Temperatures Instructions List I gathered the equipment shown below. I put 3 drops of iodine in each chamber of the spotting tile. I boiled the kettle and mixed together water from the kettle with water from the tap so the water reaches the correct temperature. The water was put into a beaker. 5ml of starch was put into a test tube.
Next, take out the excess powder until the weight is 1gm. Then use two measuring cylinders, with each measuring the amount of water and dilute hydrochloric acid that should be added, e.g. when there is 30mls of acid, 0mls of water will be added; when there is 25mls of acid, 5mls of water will be added, and so on. The total amount will always be 30mls. Afterwards, I will pour the powder into a beaker that contain correct amount of acid in it and use a stop clock to time how long it will take for the powder to disappear.