Class Action Lab Report Essay examples - 1100 Words

Joseph Sulaiman Alya Abourezk 4/13/12-4/14/12 Class Action Lab Report Purpose: To determine, through observations, the identity of substances produced in a chemical reaction. Materials: Safety Goggles Stirring rod Magnesium ribbon Solid CuSO4†¢H2O Matches Test tubes Copper metal 3M HCl Red and blue litmus strips 0.1M AgNO3 Zinc metal 0.1M Pb(NO3)2 Test tube holder 0.1M KI Bunsen burner 0.1M Na2NO3 Crucible tongs 1.0M NaOH Water (H2O) 0.1M Ca(NO3)2 50mL beaker 1.0 CuSO4 Procedure: Using the crucible tongs, take a magnesium strip and hold it in hot spot (just above the inner cone of fire) on the bunsen burner. Use peripheral vision as not to damage your eyes and hold the tongs well so the†¦show more content†¦Dispose in the waste beaker. In a clean test tube place 1mL of Na2CO3. Add 1mL of Ca(NO3)2 to the sodium carbonate solution. In a clean test tube place 1mL of NaOH. add 1mL of CuSO4 to the sodium hydroxide solution. Observations: Chemical Equation Initial Observation Final Observation Type of Reaction 2Mg+O2 -- 2MgO shiny, metallic, grey strip white, powdery, chalky substance synthesis, combustion MgO+H2O -- Mg(OH)2 chalky Mg and clear, colorless water create milky white, but clear solution Red litmus: turned slightly blue Blue litmus: no obvious change synthesis CuSO4†¢H2O -- CuSO4+5H2O cobalt blue crystal blue substance turned white, rocky, opaque-yellowish deposit, water vapor decomposition CuSO4+5H2O -- CuSO4†¢H2O clear, colorless water, white, rocky copper substance crackling, white dissolved, created a blues clear substance decomposition, synthesis 2HCl+2Zn -- H2+2ZnCl Zinc is silver, lustrous; HCl clear and colorless Zn bubbled in the HCl solution single displacement, synthesis 2ZnCl+H2 -- 2HCl+2Zn Zinc was bubbling when exposed to fire, the H gas made a popping noise single displacement 2AgNO3+Cu -- Cu(NO3)2+Ag2 clear, colorless AgNO3; bronze lustrous copper balls Cu gave off bubbles and were coated in a black, near mold like, substance single displacement Pb(NO3)2+2KI -- PbI2+2KNO3 2 clear, colorless substances bright, sunshine yellow substance (residue, solid powder) double displacement Na2CO3+Ca(NO3)2 -- 2NaNO3+CaCO3Show MoreRelatedLaboratory Management- General Functions of a Laboratory Manager1249 Words   |  5 Pagesassignment the general functions of a laboratory manager is being discussed. 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