Experiment 15 – 21 Organic Chemistry Lab Velez College
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Linseed
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Absorbs more I2
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Linseed, cottonseed, olive oil, coconut oil
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Miscible in CHCL3 Immiscible in ethanol and h2o Less dense than water, denser than ethanol
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Olive oil, cottonseed, linseed
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Gave red-orange soln Saturated fatty acid
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Linseed
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Gave light-yellow soln Contains unsaturated fatty acid
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Acrolein test
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Standard test for fats and glycerol
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300 oC
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Temperature kailangan for KHSO4 + coconut oil
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Pleasant odor
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Odor na produce when coconut oil was mixed with KHSO4
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Irritating odor
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Odor produced when Glycerol was mixed with KHSO4
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C3H5(OH)3
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Structural form of glycerol
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3C17H35COONa
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Structural form of metallic salt ; aka soap
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Metallic salt and glycerol
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Products of saponification
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Coconut oil and NaOH
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Mixed for saponification
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Saponification
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Basic hydrolysis; reaction of fat and alkali
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Cotton seed
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Light orange ang color when alcoholic iodine was added, unsaturation (lightest)
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Linseed
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Light yellow-orange when added with alcoholic iodine. 2nd lightest sa unsaturation
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Olive oil
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Dark orange sa unsaturation, 3rd lightest, alcoholic iodine
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Coconut oil
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Orange when alcoholic iodine was added; darkest
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C3H3(OOC.C15H35)3
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Fat structural form
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Free alkali in soap
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Process involved sa pag butang ug phenolphthalein sa mixture of [ivory soap + water] and when soap soln was cooled to room temp
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Salting-out in soap
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Process na na involve ang NaCl to precipitate the soap
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Crude glycerol
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Liquid na ning remain from the filtrate with alcohol then decant then evaporate alcohol; strong odor
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Light blue
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Color sa soap and CuSO4; reacted; insoluble soap
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Cu(C11H23COO)2
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Structural form of CuSO4 and soap; insoluble soap
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No reaction
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Reaction sa pag add sa MgSO4 and CaCl2 separately with soap soln; insoluble soap
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Mg(C11H23COO)2
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MgSO4 and soap; insoluble soap; white
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Ca(C11H23COO)2
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CaCl2 and soap; insoluble soap; white
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KHSO4 / Potassium hydrogen sulfate
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Dehydrating agent sa acrolein test > hydrolysis > irritating odor
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Emulsifying action
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Process involved sa pag mix sa oil with water
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Urea
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Diamide of carbonic acid; prepared by action of ammonia on phosgenes
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Formation of urea nitrate
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Property of urea na daghan ang ma form balik na urea sa pagbutang ug Nitric acid sa mixture of [Urea + H2O]
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NH2CONH2 * HNO3
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Structural form sa product of adding nitric acid to mixture of urea and water
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Urea nitrate
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Product / name of HNO3 + H2O + NH2CONH2
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Urea oxalate
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Urea + oxalic acid; gamay ra urea ni form balik when oxalic acid was added to urea solution
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NH2CONH2(COOH)2
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Urea oxalate structural form
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(COOH)2
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Oxalic acid
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Formation of Biuret
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Tawag sa process when urea was heated then naay vapors nigawas;
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NH3 gas
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Tawag sa vapor when urea was heated; ammonia gas; basic
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NH2CONHCONH2
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Structural form sa biuret
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Biuret test
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Test for the presence of urea; violet coloration
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Violet
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Color for heated urea when CuSO4 was added
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Blue
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Color for unheated urea when CuSO4 was added
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[(NH2CO)2N]2Cu
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Structural form for biuret test katong heated ug unheated urea
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N2 gas
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Gas sa rxtn of nitrous acid on urea katong bubbles bubbles
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NaNO2
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Caused the bubbles; clear soln
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Aniline
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Colorless liquid; brown (oxidation) Peculiar odor Insoluble in water Soluble in organic solvents Toxic
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Acidic
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Basic or acidic? When FeCl3 was added to the mixture of [aniline and water]
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NH3OH
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Aniline + H2O
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Fe(OH)3 + NH3Cl
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Product sa pag add ug FeCl3 sa NH3OH
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Salt formation
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Process na giadd ang HCl sa Aniline then ning solidify siya
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NH2Cl
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Product sa pag add sa HCl sa aniline ; salt formation
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2,4,6-tribromoaniline
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Iupac name sa pag add ug Br2 H2O sa NH3OH
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Diazotization
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Katong [aniline + H2O + HCl] + NaNO2 (0⚫C) to form diazotized aniline
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N_=NCl
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Diazotized aniline
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Phenol
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Mao ni na form sa pag warm sa diazotized aniline
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Paste-like odor
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Phenol; odor of warmed diazotized aniline
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Yellow
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Color sa phenol; [phenol+ NaOH + diazotized aniline + H2O]
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Orange
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Color sa resorcinol; [Resorcinol + NaOH + diazotized aniline + H2O]
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P-hydroxyazobenzene
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Name of phenol product; OH
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Benzeneazoresorcinol
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Name of resorcinol product; 2 OH
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False; soluble
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Formic, acetic, propionic and butyric acids are insoluble in water. T or f?
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True
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Butyric acid is slightly soluble in water
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True
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Formic acid has irritating odor
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False; insoluble
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CH3(CH2)16COOH Stearic acid is soluble in water
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Slightly soluble
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C6H5COOH Benzoic acid's solubility in water
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Soluble
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CH3COOH Acetic acid's solubility in water
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Soluble
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Acetic acid's solubility in sodium bicarbonate
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Slight/soluble
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Benzoic acid in sodium bicarbonate
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Insoluble
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Stearic acid in sodium bicarbonate
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MnO2
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Acetic; benzoic; presence of this (oxidizing agent)
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Mn+2
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Kung clear solution pag iadd nimo ang acid ug K2MnO4; formic oxalic
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Colorless
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Color of salicylic acid
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Odorless
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Odor of salicylic acid
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Insoluble
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Solubility of salicylic acid in water and NaOH
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Soluble
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Solubility of salicylic acid in alcohol
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Ferric salicylate
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[Water+ salicylic acid] + FeCl3
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Violet ppt
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Color of Ferric Salicylate
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[COOOH]3 Fe or [C6H4(OH)COOH]3 Fe
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Structural form of Ferric salicylate
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Light yellow soln
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Bromine water + [water+salicylic acid]
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Red ppt
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Millon's reagent + [water+salicylic acid]
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Paste odor; antiseptic odor
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Odor of Sodalime and Salicylic acid + heat; blue first then white pagkadugayan
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Phenol and HCOONa
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Product of sodalime and salicylic acid and heat
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CaO
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Reagent used for rxtn with soda lime ang salicylic acid
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Decarboxylation
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Process sa rxtn with soda lime
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HCOONa
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Sodium formate structural form
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Methyl salicylate
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CH3(C6H5OHCOOH) [salicylic acid+CH3OH+H2SO4]
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H2SO4
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Reagent used for ester formation
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Oil of wintergreen - mintlike odor
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Odor of methyl salicylate
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Air condenser
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Use of long glass tubing with a cork in the preparation of aspirin
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Filtration
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Process used to separate the aspirin crystals after crystallization
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Acetic acid
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CH3COOH Product of reaction of acetic anhydride, salicylic acid and sulfuric acid
