Design Lab Chemistry Surface Area

excogitation Lab 17 Reaction Rate Calcium Carbonate & Hydrochloric acid Design D Introduction In this experiment calcium carbonate get out be put into a flaskful and mixed with hydrochloric acid to levy calcium chloride, water and carbon dioxide. The formula for this reaction is CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) Purpose The usage of this experiment is to determine how the surface area of CaCO3(s) affects the rate of reaction by measuring the lot of CO2(g) produced with time.Background When solid reactants are mixed with liquid reactants plainly the particles on the surface of the solid will have direct contact, or collide, to the opposite liquid reactant particles. When at that place is much surface area there will be more solid particles exposed to collide with cleave liquid particles. When there are small pieces of the solid reactant, the rate would be faster than if it were larger pieces with the same potbelly. There will be more collisions per unit of time, which means reaction will precede faster. Variables Independent (Changed) ) out area of CaCO3 Dependent (Measured) 1) Volume of fuck upeous product formed (CO2(g)) Controlled (Constant) 1) push- humble store of CaCO3 2) Temperature of reaction 3) Concentration of HCl 4) Volume of HCl 5) Time intervals for recording volume frame-up 100 mL conical flaskSingle-holed rubber stopper 90 g of CaCO3 chips90 g of CaCO3 powder 90 g of CaCO3 tablets100 mL gas spray 100 mL graduated cylinderDigital Stopwatch 450 ml 1. 0 M HCl Stand & Clamp Electronic balance Safety Procedures 1) carry safety goggles for protection. 2) Handle HCl acid with care. If splashes on skin dry wash at adept time 3) Always point gas syringe downwards.Procedure 1) Set up equipment for experiment. Set up the gas syringe with the clamp and connecting pipe connecting to the flask. deplete the rubber stopper and stopwatch nearby at your station. 2) Place a on electronic balance. 3) Place the CaCO3 tablet on and weigh 10 g precisely on electronic balance. Record vision. 4) When taking mass make sure the tablet, chips and powder all have the same mass 10g 5) Measure 50 mL of acid with a graduated cylinder. move into conical flask. 6) For the first base reaction use the CaCO3 tablets. Start stopwatch immediately after CaCO3 tablets are added into flask.Simultaneously cover flask with stopper. 7) Insure that the connecting pipe from the flask to the syringe is connected properly. 8) At 10 seconds record the volume of gas in the syringe. 9) Record the volume of gas inside syringe both 10 seconds until you have 3 consistent readings. 10) borrows steps 2 through and through 8 for two more trials to have 3 values for each type of CaCO3. 11) paraphrases steps 2 through 7 for the CaCO3 chips 12) Repeats steps 2 through 7 for the CaCO3 powder. Method 2. Cut atomic number 12 ribbon into 15 20mm strips 0. 5mm 3. Fill measuring cylinder with 100ml 0. 1ml water. Invert inside an ce-cream container. Fill container with water. 4. birth the 5 mol dm-3 acid and pipette 5ml 0. 1ml of acid into each 3 test tubes. Insert delivery tube into measuring cylinder under water and prepare tap above the boiling tube. 5. Pour one test-tube into the boiling tube. Place one piece of 2cm 0. 5cm magnesium into the tube, affix bung to the tube and begin the stopwatch 6. After 5 seconds, record the fall of water displaced on the measuring cylinder. This will be in millilitres 0. 1ml. Repeat this at 10 seconds. 7. Continue recording at 5-second intervals until 3 consistent readings are gained. . Repeat steps 4 through 7 with the other two on the watch test tubes to give 3 readings per concentration 9. Repeat steps 3 through 8 with the remaining four prepared concentrations of acid Stat stopwatch Place the marble chips and powdered marble into separate test tubes. Add 10cm of the dilute hydrochloric acid to each of the test tubes and adopt the rate at which carbon dioxide is produced Gas Syringe Method Equipment Conical Flask, Bung, Connecting Pipe, Gas Syringe, Hydrochloric Acid, Magnesium Ribbon, Clamp, Stand. For this method we set up the equipment as followsThe first to do is to gather together all equipment, then once that is through get the conical flask and put the bung into the top of it. thusly connect the pipe from the bung to the gas syringe, making sure that it is channelise tight. Then once everything is set up get the stop clock ready, measure out the 50ml of hydrochloric acid and pour it into the conical flask and once more the same as the burette method simultaneously put the magnesium into the conical flask, put the bung into the top of the flask and start the timer. We took down measurements in 5 second intervals. The gas syringe has a volume of 100ml?.