Lab Report separtion and id of mixture

Lab Report separtion and id of mixture - After that a...

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Zach Lashaway Monday, #81 9-16-07 Separation and Identification of a Mixture Procedure : The procedure consisted of the separation of a solid unknown mixture into three parts. The three parts were then further tested by way of a melting point test, flame test, solubility and qualitative test. Then the different compounds were able to be identified. The unknown solid mixture assigned to each individual was carefully weighed out and an organic solvent was added and stirred. The liquid was then poured through a filter, which separated it into compound A, and/or B, C. The solid material left in the beaker was compounds B and/or C and the liquid filtered through was A. With the compounds separated into two parts, compound A was further examined by way of melting point and solubility tests of water, toluene and ethyl alcohol, then identified and recorded. Distilled water and diluted (6M) hydrochloric acid was added to compound B to observe the evolution of gas bubbles, in order to confirm the presence of carbonate ion.
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Unformatted text preview: After that a platinum wire was cleaned with concentrated (12M) hydrochloric acid in a small beaker. Diluted hydrochloric acid was added to compound B, and then a flame test was performed. The color of the flame was observed in order to indentify the compound if uncertain a qualitative test for B was done and recorded. It consisted of the addition of nitric acid to the solid in a small beaker. Then adding heat until it completely dissolved. Once it was dissolved flame test were performed again until a positive test was shown for a metal ion. A test for chloride ion was performed on compound C. This consisted of adding silver nitrate to compound C to observe a white precipitate of silver chloride, to confirm the presence of chloride ion in compound C. Later a flame test was performed to observe the color of the flame to try and identify a metal ion once again if unsure; a qualitative test was performed for compound C until a positive test for a metal ion was found and recorded....
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This note was uploaded on 04/17/2008 for the course CHEM 132 taught by Professor Egolf during the Spring '08 term at Marietta.

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Lab Report separtion and id of mixture - After that a...

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