Design Lab Chemistry Surface Area

Design Lab 17 Reaction regularize Calcium Carbonate & Hydrochloric acerbic Design D Introduction In this experiment calcium blowate go out be displace into a flask and mixed with hydrochloric panelling to produce calcium chloride, water and carbon dioxide. The formula for this response is CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) Purpose The purpose of this experiment is to determine how the come on ara of CaCO3(s) affects the rate of reaction by measuring the volume of CO2(g) produced with time.Background When fast reactants are mixed with liquid reactants only the particles on the surface of the hearty will form direct contact, or collide, to the other liquid reactant particles. When in that respect is more(prenominal) surface area there will be more solid particles exposed to collide with other liquid particles. When there are sm altogether patchs of the solid reactant, the rate would be faster than if it were larger pieces with the comparable mass. There will be more collisions per unit of time, which means reaction will precede faster. Variables Independent (Changed) ) Surface area of CaCO3 Dependent (Measured) 1) book of muffeous product formed (CO2(g)) Controlled (Constant) 1) Mass of CaCO3 2) Temperature of reaction 3) Concentration of HCl 4) book of HCl 5) Time intervals for transcription volume Apparatus 100 mL cone-shaped flaskSingle-holed rubber s superlativeper 90 g of CaCO3 chips90 g of CaCO3 powder 90 g of CaCO3 launchpads100 mL spoil syringe 100 mL gradational cylinderDigital Stopwatch 450 ml 1. 0 M HCl Stand & Clamp electronic balance Safety Procedures 1) Wear safety goggles for protection. 2) Handle HCl vinegarish with care. If splashes on skin wash immediately 3) Always point muck up syringe downwards.Procedure 1) Set up equipment for experiment. Set up the flub syringe with the clamp and connecting pipe connecting to the flask. Have the rubber stopper and stopwatch close at your station. 2) Place a on electro nic balance. 3) Place the CaCO3 tablet on and weigh 10 g precisely on electronic balance. Record mass. 4) When taking mass make sure the tablet, chips and powder every last(predicate) have the same mass 10g 5) Measure 50 mL of acid with a graduated cylinder. Pour into conical flask. 6) For the first reaction single-valued function 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 every 10 seconds until you have 3 undifferentiated readings. 10) Repeats steps 2 by means of 8 for two more trials to have 3 values for every type of CaCO3. 11) Repeats steps 2 through 7 for the CaCO3 chips 12) Repeats steps 2 through 7 for the CaCO3 powder. Method 2. fill out magnesium ribbon into 15 20mm strips 0. 5mm 3. Fill measuring c ylinder with 100ml 0. 1ml water. contain inside an ce-cream container. Fill container with water. 4. Take the 5 mol dm-3 acid and pipet 5ml 0. 1ml of acid into each 3 test electron tubes. Insert delivery tube into measuring cylinder under water and prepare bung preceding(prenominal) 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. later on 5 seconds, record the amount 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 prepared test tubes to overtake 3 readings per concentration 9. Repeat steps 3 through 8 with the remaining four prepared concentrations of acid Stat stopwatch Place the stain chips and powdered marble into separate test tubes. Add 10cm of the dilute hydrochlori c acid to each of the test tubes and observe the rate at which carbon dioxide is produced squander Syringe Method Equipment Conical Flask, Bung, Connecting Pipe, Gas Syringe, Hydrochloric Acid, Magnesium Ribbon, Clamp, Stand. For this method we readiness up the equipment as followsThe first to do is to gather together all equipment, then once that is done get the conical flask and put the bung into the top of it. Then connect the pipe from the bung to the gas syringe, making sure that it is air tight. Then once everything is set up get the stop clock ready, measure out the 50ml of hydrochloric acid and rain buckets it into the conical flask and again 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?.