Experiment 15 – 21 Organic Chemistry Lab Velez College

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

or

[C6H4(OH)COOH]3 Fe

Structural form of Ferric salicylate
Light yellow soln
Bromine water + [water+salicylic acid]
Red ppt
Millon’s reagent + [water+salicylic acid]
Paste odor; antiseptic odor
Odor of Sodalime and Salicylic acid + heat; blue first then white pagkadugayan
Phenol and HCOONa
Product of sodalime and salicylic acid and heat
CaO
Reagent used for rxtn with soda lime ang salicylic acid
Decarboxylation
Process sa rxtn with soda lime
HCOONa
Sodium formate structural form
Methyl salicylate
CH3(C6H5OHCOOH)
[salicylic acid+CH3OH+H2SO4]
H2SO4
Reagent used for ester formation
Oil of wintergreen – mintlike odor
Odor of methyl salicylate
Air condenser
Use of long glass tubing with a cork in the preparation of aspirin
Filtration
Process used to separate the aspirin crystals after crystallization
Acetic acid
CH3COOH
Product of reaction of acetic anhydride, salicylic acid and sulfuric acid