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White crystal like substance and slightly thickWhite and fluffy with a relatively fluid motionConsistency after1hourGelatinous with clear yellow liquid belowYellow mass, very thick not easily movedWhite crystal suspended in clear solution, somewhat fluidWhite mass in clear solution- looks fluffy and easily movableThe last stage of the experiment was testing the soaps’ pH and cleaning properties. Using distilled water, tap water, and calcium chloride I was able to observe changes in the different oils. Observations in the amount of suds and any precipitates formed are recorded in Data Table 3, Testing the Soaps Cleaning Ability and pH. Data Table 3: Testing the Soaps Cleaning Ability and pHCanola Oil soapCorn OilsoapCoconutOil soapOliveOil soapDetergent1.Distilled water: amount of suds?Very few- Mayhave been a result of shakingYes- There were many suds A few bubbles were formedat topYes- About ¼ of the test tube was sudsYes- equal amounts of water and suds2.Distilled water:precipitate?None presentNone presentNone presentNone presentKind of- Couldbe detergent3.pH1081212104.CaCl2 added: amount of suds?NoneNoneNoneNoneYes Suds became apparent5.CaCl2 added: precipitate?NoneA little could be seen formed at bottomSolid formedlooks like dirt Small amount of solid formingNone
6.Tap water: amount ofsuds?NoneYes equal towater levelNoneYes medium amountApprox. equal to the water 7.Tap water: precipitate?NoneSmall particlesSlight particles of solidNoneUn-dissolved detergentCalculations and Error-In this lab there were no calculations to do. The only possible sources of error occurred during the different phases of the procedure. In the first phase upon the addition of sodium hydroxide and the stirring the oils began to cloud up and also their firmness changed. Had I not mixed the two solutions evenly throughout I may not have been able to properly identify and rank the firmness. For example, if I hadonly stirred and not properly mixed in a vertical fashion it would have kept them separate and possibly unidentifiable in the firmness. In the second phase the water temperature would have to be at a hot and steady enough heat to help the oil and soap separate. The water did come up to a boil and then remained off of the heat afterwards, however, depending on the heat may not have been hot enough or too hot to help set the soaps. Finally, the analysis of pH and cleaning ability was done by shaking the tubes for a couple seconds upon the addition of different mediums.