the distinctive components of a mixture interact to different extents with the stationary and mobile phases. It was determined that Unknown #7 contains Methylene blue‚ Methyl violet‚ Basic fuchsin‚ and Methyl red. We determined that Unknown #3 contains Methylene blue‚ Rhodamine B‚ Methyl violet‚ and Clayton Yellow (or Methyl red). The reason that the yellow or red is stated is because there were no Rf values and the colors had to be compared to the pictures that were taken of the other TLC plates
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www.sakshieducation.com CHEMISTRY IN EVERY DAY LIFE LONG ANSWER QUESTIONS 1. Explain the different classifications of drugs. Classifications of drugs: Drugs are classified in different ways. i) On the basis of drug action: Based on the actions of drugs on particular biochemical processes they are classified as i) Antibacterials iv) Sedatives and tranquilizers ii) Antibiotics v) Cardio vascular drugs iii) Hypnotics vi) Antiseptics etc. ii) On the basis of molecular targets: Biomolecules
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Abstract: A qualitative analysis experiment was conducted to determine the identity of an unknown aldehyde or ketone. The tests include a Tollens test‚ a Schiff test‚ an iodoform test‚ and a derivative melting point test. The data of the first three tests was inconclusive. The final derivative melting point test was utilized to successfully determine that the unknown was the ketone‚ Propiophenone. Introduction: Qualitative analysis is a method or series of methods used to determine the
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in general‚ whether gram-positive or gram-negative.] Perform catalase test. {Catalase test is positive.} Inoculate test tubes prepared with the following mediums – Triple Sugar Iron agar slant (TSI slant)‚ Bile Esculin Agar slant (BEA tube)‚ a methyl-red Voges-Proskauer tube (MR-VP tube) and a Urease tube. Incubate the inoculated tubes‚ to be read at the following lab session. Observe results of tests inoculated during the last session [Note: I used the wrong setting on my digital camera to
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Measurement of the amount of light to the absorbance is called spectrophotometer. Spectrophotometer used to test the sample by passing through the light it’s worked to measure the light that passing through. Biological substances such bromophenol blue and methyl orange‚ are the common substances to be used in testing of interaction of substance with the light. These solutions called pigments where they usually can absorb the visible of light that passing through it. The cleared compounds or solution also
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solution obtained in the conical flask. Fill 29.00mL of HCL in the burette. Use a pipette to transfer 10.00mL portion of the solution into a conical flask and drop 5 drops of methyl orange into it by using a dropper. Then‚ slowly open the mouth of the burette and allow HCL to flow into the conical flask containing Ca (OH)₂ and methyl orange as the indicator. Titrate the solution until the yellow colour of the solution turns into orange. Repeat the experiment for several times to get the average reading
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using “Fmoc chemistry”. The first part of experiment was the synthesis of L-phenylalanine methyl ester hydrochloride. The methyl ester can be synthesised by reaction of thionyl chloride‚ SOCl2 and dry methanol with L-phenylalanine under reflux condition. The peptide bond was formed later in the experiment‚ where HBTU‚ DiPEA and a solution of Fmoc-Gly-OH in DMF were added to a solution of L-phenylalanine methyl ester hydrochloride in DMF. The product formed was the protected dipeptide‚ Fmoc-Gly-Phe-OMe
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Brand Proposal Submitted by: Razel C. Belleza C27 Submitted to: Mr. Erl Pilla Looking for soda? Try "Mr.Fizzy" ’It refreshes body and mind’ A brief history of soda The term "soft drink" is derived from "soda water"‚ dating as far back as 1798. Joseph Priestly invented carbonated water in 1767‚ when he first discovered a method of infusing water with carbon dioxide (CO2) by suspending a bowl of water over a vat of fermenting beer in a brewery in
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First 10 minutes all the liquids are still not frozen. Second 10 minutes all of the liquids are starting to freeze around the edges. Third 10 minutes water is almost completely ice on the surface‚ Sprite is half ice on the surface and Mello Yello‚ Orange Fanta‚ Coca Cola are still just ice around the edges. Fourth 10 minutes water is almost fully frozen‚ Sprite is not quite completely frozen on the top‚ Coca Cola‚ Mello Yello‚ Orange Fanta are all slushy. Fifth 10 minutes water is really close to
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Opinion of Guan Yin SUPREME COURT OF THE UNITED STATES No. 11-817 STATE OF FLORIDA‚ Petitioner‚ v. CLAYTON HARRIS‚ Respondent. ON WRIT OF CERTIORARI TO THE SUPREME COURT OF FLORIDA Syllabus The case present before us involves the constitutionality of a dog sniff in regards to the 4rth Amendment. The respondent claims that the police
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