chem lab exp. 3

chem lab exp. 3 - Laboratory 3. Separation of Components of...

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Laboratory 3. Separation of Components of a Mixture. Name: Norkhairin Yusuf Partner: Azizah Ahmad Section Section 40, Monday 2 PM Performed: 22 September, 2008 Submitted 29 September, 2008 Laboratory Instructor: HongMei Yuan Your Signature ___________________________________
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Purpose The purpose of this lab was to know that a mixture can be separated into its components (elements or compounds) according to the physical or chemical properties of the component. A ternary (3-part) system will be separated into: silicon dioxide (SiO 2 ), Calcium carbonate (CaCO 3 ), and potassium chloride (KCL) in this experiment. Introduction In real life mixture consisting of many elements or compounds are more abundant than having pure substances. But sometimes we are only interested in the elements or compounds in variety amount. Identifying WHAT is contained in the sample is the qualitative analysis and knowing HOW MUCH of a component is contained in the sample and this is quantitative analysis. However in this experiment, we only want to know how much is potassium chloride (KCl), Silicon dioxide (SiO 2 ), Calcium carbonate (CaCO 3 ) so since he have to know what dilutes in water and what does not dilute in water, as well as what component dilute in Acid or Potassium and what does not. So basically that is what the experiment is all about. Experimental PART A: DETERMINATION of AMOUNT of KCL [1] A vial is obtained containing the unknown. The number is recorded. (a) The mass of unknown vial full is recorded (b) Half of the vial’s content is emptied into a 250-mL beaker. (c) The mass of the unknown vial with its remaining content is recorded (d) The mass of a dry, clean 150-mL beaker is recorded. (e) 50 mL of distilled water (using the graduated cylinder) is added to the content
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chem lab exp. 3 - Laboratory 3. Separation of Components of...

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