Design Lab Chemistry Surface Area

Design research laboratory 17 Reaction Rate atomic number 20 Carbonate & Hydrochloric cutting Design D Introduction In this experiment calcium light speedate will be pose into a flaskfulful and complex with hydrochloric acid to produce calcium chloride, water system and carbon dioxide. The formula for this chemical reply is CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) Purpose The take of this experiment is to determine how the egress plain of CaCO3(s) affects the rate of reception by beat the volume of CO2(g) produced with time.Background When red-blooded reactants are mixed with politic reactants only the particles on the surface of the stiff will waste level contact, or collide, to the another(prenominal) liquid reactant particles. When at that place is more surface area thither will be more solid particles exposed to collide with other liquid particles. When there are small pieces of the solid reactant, the rate would be faster than if it were big pieces w ith the same mass. There will be more collisions per unit of time, which means reaction will precede faster. Variables Independent (Changed) ) bug bulge area of CaCO3 Dependent (Measured) 1) Volume of plasheous product formed (CO2(g)) Controlled (Constant) 1) Mass of CaCO3 2) Temperature of reaction 3) C at a timentration of HCl 4) Volume of HCl 5) Time intervals for preserve volume Apparatus 100 mL Conical flaskSingle-holed rubber quid 90 g of CaCO3 chips90 g of CaCO3 powder 90 g of CaCO3 tablets100 mL triggerman spray 100 mL gradational piston chamberDigital s solve watch 450 ml 1. 0 M HCl dead end & Clamp Electronic balance guard Procedures 1) Wear safety goggles for protection. 2) do HCl acid with care. If splashes on skin mop flat 3) Always point gas spray downwards.Procedure 1) station up equipment for experiment. Set up the gas spray with the fix and connecting pipe connecting to the flask. Have the rubber stopper and stop watch nearby at your station. 2) initiate in a on electronic balance. 3) bulge the CaCO3 tablet on and weigh 10 g precisely on electronic balance. write down mass. 4) When taking mass represent sure the tablet, chips and powder all turn out the same mass 10g 5) Measure 50 mL of acid with a graduated cylinder. bourgeon into conical flask. 6) For the first 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 spray is connected properly. 8) At 10 seconds eternalize the volume of gas in the syringe. 9) Record the volume of gas inside syringe every 10 seconds until you have 3 consistent readings. 10) Repeats travel 2 by means of 8 for two more trials to have 3 values for every image of CaCO3. 11) Repeats step 2 through 7 for the CaCO3 chips 12) Repeats steps 2 through 7 for the CaCO3 powder. Method 2. Cut milligram bay wreath into 15 20mm strips 0. 5mm 3. Fill ba r cylinder with 100ml 0. 1ml water. Invert inside an ce-cream container. Fill container with water. 4. issue the 5 mol dm-3 acid and pipet 5ml 0. 1ml of acid into each 3 examination tubes. Insert delivery tube into measuring cylinder under water and furbish up spile above the boiling tube. 5. Pour champion 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. afterwards 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 fork out 3 readings per concentration 9. Repeat steps 3 through 8 with the stay four prepared concentrations of acid Stat stopwatch Place the marble chips and powdered marble into separate test tubes. Add 10cm of the vitiate hydrochloric acid to each of the test tubes and come upon the rate at which carbon dioxide is produced turgidity Syringe Method Equipment Conical Flask, Bung, Connecting Pipe, gun for hire Syringe, Hydrochloric Acid, Magnesium Ribbon, Clamp, Stand. For this method we set up the equipment as followsThe first to do is to heap up together all equipment, then once that is done get the conical flask and put the bung into the top of it. wherefore connect the pipe from the bung to the gas syringe, making sure that it is air tight. past 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 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?.