Reactants Lab Essay

Aspect 1 Problem What type of chemical reactions occurs when different reactants are mixed?Variables Manipulated Combination of reactantsResponding Type of Chemical ReactionControlled 1. Same amount of money of reactants used (1 piece for solids, 4 drops for liquids)2. Spot central office is washed before reactants are mixed3. Same amount of time totality is allowed for chemical reaction to occur (15s)4. Because data is qualitative, observations leave alone be made by the same person.Aspect 2 Controlling Variables The same amount of reactants universe used will be controlled by using the same amount of reactants in each reaction (1 piece for solids, 4 drops for liquids).Spot plate will be washed before each chemical reaction (using the water from the squeeze bottle) to ensure no residue is left-hand(a) from previous reaction.Observations will be made 15 seconds after the chemical raction. Time will be kept using a watch.The same person will make out qualitative observations, t o ensure that observations are kept consistent.Aspect 3 Materials Spot Plate Forceps Squeeze Bottle filled with water ToothpickList of ReactantsFig. 1.1ReactantChemical ruleraluminum (s)Al (s) hair (II) chloride (aq)CuCl2 (aq)barium hydroxide (aq)Ba(OH)2 (aq)sulphuric caustic (aq)H2SO4 (aq)chlorine (aq)Cl2 (aq)sodium bromide (aq)NaBr (aq)zinc (s)Zn (s)copper (II) sulphate (aq)CuSO4 (aq)hydrochloric battery-acid (aq)HCl (aq)atomic number 12 hydroxide (aq)Mg(OH)2 (aq)calcium chloride (aq)CaCl2 (aq)sodium carbonate (aq)Na2CO3 (aq)calcium (s)Ca (s)water (l)H2O (l)sodium acetate (aq)C2H3NaO2 (aq)magnesium (s)Mg (s)sodium hydroxide (aq)NaOH (aq)cobalt chloride (aq)CoCl2 (aq)List of Chemical ReactionsFig. 1.2Reactant 1Reactant 2sulphuric acid (aq)barium hydroxide (aq)hydrochloric acid (aq)magnesium hydroxide (aq)calcium (s)water (l)hydrochloric acid (aq)sodium acetate (aqzinc (s)copper (II) sulphate (aq)cobalt chloride (aq)sodium hydroxide (aq)magnesium (s)hydrochloric acid (aq)sodium b romide (aq)chlorine (aq)aluminum (s)copper (II) chloride (aq)Procedure1. Wash spot plate thoroughly with water from squeeze bottle.2. Choose a combination of reactants from Fig. 1.13. Write down physical properties of reactants.4. Mix reactants. mark observations.5. Wash spot plate thoroughly, making sure reactants fall into a waste bucket.6. Repeat steps 1-4 using all the other combinationsData entreaty and Processing (DCP)Aspect 1 Observation Chart of Chemical ReactionsFig. 1.3Reactant 1Chemical FormulaReactant 2Chemical FormulaPr-reaction observationPost-reaction observationsulphuric acid (aq)H2SO4 (aq)barium hydroxide (aq)Ba(OH)2 (aq)Two transparent liquidsMilky-white substance. spatter bubbles form.hydrochloric acid (aq)HCl (aq)magnesium hydroxide (aq)Mg(OH)2 (aq)Transparent liquidsTransparent liquidhydrochloric acid (aq)HCl (aq)sodium acetate (aq)C2H3NaO2 (aq)Transparent liquidsTransparent liquidcalcium (s)Ca (s)water (l)H2O (l)Flaky-white solid, and transparent liquidCalci um dissolves a bit in water. A a few(prenominal) gas bubbleszinc (s)Zn (s)copper (II) sulphate (aq)CuSO4 (aq)Grey rocky solid, with bluish liquidGas bubbles form on zinccobalt chloride (aq)CoCl2 (aq)magnesium hydroxide (aq)Mg(OH)2 (aq)Red liquid and clear liquidPinkish-purple substance. Gas bubbles formmagnesium (s)Mg (s)hydrochloric acid (aq)HCl (aq)Silver, lustrous metal and transparent liquidGas bubbles form on magnesiumsodium bromide (aq)NaBr (aq)chlorine (aq)Cl2 (aq)Transparent liquidsTransparent liquidaluminum (s)Al (s)copper (II) chloride (aq)CuCl2 (aq)Lustrous rock and dour liquidGas bubbles form on aluminumAspect 2 Processing DataChemical Reactants and Products Equations BalancedH2SO4(aq) + Ba(OH)2(aq) BaSO4(s) + 2HO2(l)(Double Replacement Reaction)Mg(OH)2 (s) + 2 HCl (aq) MgCl2 (s) + 2H2O (l)(Neutralization Reaction)NaC2H3O2 (aq) + HCl (aq) HC2H3O2 (aq) + NaCl (aq) (Double Replacement Reaction)Ca (s) + 2HOH (l) Ca(OH)2 (aq) + H2(g)(Single Replacement Reaction)CuSO4 ( aq) + Zn (s) ZnSO4 (aq) + Cu (s)(Single Replacement Reaction)CoCl2 (aq) + 2NaOH (aq) 2 NaCl (aq) + Co(OH)2 (aq)(Double Replacement Reaction)Mg (s) + 2HCl (aq) MgCl2 (aq) + H2 (s)(Single Replacement Reaction)Cl2 (aq) + 2NaBr (aq) 2NaCl (aq) + Br2 (l) (Single Replacement Reaction)2Al (s) + 3CuCl2 (aq) 2AlCl3 (aq) + 3Cu (s) (Single Replacement Reaction)Aspect 3 Reactants, Products, and Types of Reaction ChartReactant 1Reactant 2ProductType of ReactionH2SO4(aq)Ba(OH)2(aq)BaSO4(s) + HO2(l)Double ReplacementMg(OH)2 (s)HCl (aq)MgCl2 (s) + H2O (l)Neutralization ReactionNaC2H3O2 (aq)HCl (aq)HC2H3O2 (aq) + NaCl (aq)Double ReplacementCa (s)HOH (l)Ca(OH)2 (aq) + H2(g)Single ReplacementCuSO4 (aq)Zn (s)ZnSO4 (aq) + Cu (s)Single ReplacementCoCl2 (aq)NaOH (aqNaCl (aq) + Co(OH)2 (aq)Double ReplacementMg (s)HCl (aq)MgCl2 (aq) + H2 (s)Single ReplacementCl2 (aq)NaBr (aq)2NaCl (aq) + Br2 (l)Single ReplacementAl (s)CuCl2 (aq)AlCl3 (aq) + Cu (s)Single ReplacementConclusion and valuation (CE)Aspect 1 Conclusion In this experiment we discovered three types of chemical reactions, Single and Double Replacement reactions, along with Neutralization Reaction. Referring to Data in Aspect 2 & 3 of Data Collection and Processing, we can see there were 5 single replacement reactions, and 4 double replacement reactions (one of which was a neutralization reaction). The reactions involving an element and a compound were all single replacement reactions, and the reaction involving two compounds were double replacements (which included a neutralization reaction).Aspect 2 Evaluate the Procedure A problem with this procedure is that it doesnt explore all types of chemical reactions. Also, try as one may, it is sometimes difficult to make believe the residue of a substance off the spot plate. This tampers with results.Aspect 3 Improving Experimental Design A few more reactions should be added where childlike composition and decomposition are shown. Also, using the Bunsen burner, a reaction shou ld be added where hydrocarbon combustion is shown.Disposable spot plates should be used, to ensure that residue left by previous reactants and reactions, do not tamper with results.