What does it mean if an unknown compound reacts with the Lucas Reagent to form an...
What does it mean if an unknown compound reacts with the Lucas Reagent to form an red/brown precipitate?
The unknown solution is an oily yellow, semi-crystal gel (partially liquid partially crystalline solid at room temp). Usually the Lucas Test turns cloudy in the presence of tertiary and secondary alcohols, but that is not what happened. Instantly after adding a few drops of the Lucas Reagent, the test tube got very hot and formed a red/brown precipitate. What group does this indicate?
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What does it mean if an unknown compound reacts with the Lucas
Reagent to form an...
CHEM 104L ALCOHOLS AND PHENOLS Ferric Chloride and Lucas Test Compound Color of terric chloride test...
CHEM 104L ALCOHOLS AND PHENOLS Ferric Chloride and Lucas Test Compound Color of terric chloride test Observation and Time with Lucas Test y of d to rew tion int. 1-Butanol yellow white " clear 1-Hercanol yellow while clear 2-Propanol yellow white clean mely TO 2-Methyl-cyclohexanol yellow Why with cloudy white mical 2-Methyl-2-propanol yellow while loudy Phenol orang yellow brown and while the and cloudy Hexanol Unknown yellow clear the unknown Question Which alcohols have a positive reaction with the Lucas...
What is the empirical and molecular formula ? What is the molecular weight ? Computer Unknown...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 9 Physical Properties MP 206-210 °C White solid C 77.86 % H=11.76 % Sodium Fusion Test A purtion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No obeervable change was noticed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed. Another portion was...
What is the empirical and molecular formula ? What is the molecular weight ? omputer Unknown...
What is the empirical and molecular formula ? What is the
molecular weight ?
omputer Unknown #10 Physical Properties MP48-51 °C White solid C = 48.27% H=3.54% Sodium Fusion Test A portion of the sedium fi ltrate was treated with and heated. It was then acidified wit was noticed rate was treated with ferrous sulate o acidified with dilute sulfuric acid. No observable change Another portion of the sodium fusion filtrate was treated with te observable change was noticed. on...
How do you calculate the empirical and molecular formula of this unknown compound ? How do...
How do you calculate the empirical and molecular formula of
this unknown compound ? How do you calculate the molecular weight
?
Computer Unknown # Physical Properties MP 48-51 °C White solid C = 48.27% H=3.54% Sodium Fusion Test A portion of the sodium fusion filtrate was treated and heated. It was then acidified wit was noticed. filtrate was treated with ferrous sulfate acidified with dilute sulfuric acid. No observable change Another portion of the sodium fus observable change was...
Use the information below to fill in the charts on the 1st screenshot and then answer...
Use the information below to fill in the charts on the 1st
screenshot and then answer the questions on the 2nd screenshot.
UNKNOWN #: 399
2,4-dinitrophenylhydrazine Test: solution remains
colorless
Fehling’s Test: solution remains colorless
Lucas test: solution became cloudy immediately when
reagent was added
Tollen’s test: solution remains colorless
Iodoform Test: solution remains colorless
Bordwell-Wellman Test: no rxn was observed
UNKNOWN #: 499
2,4-dinitrophenylhydrazine Test: solution changed to a
yellow-orange color with some precipitation
Fehling’s Test: solution changed to...
How do you calculate the empirical and molecular formula of this unknown compound ? How do...
How do you calculate the empirical and molecular formula of
this unknown compound ? How do you calculate the molecular weight
?
Computer Unknown # 8 Physical Properties ВP Colorless Liquid Sweet odor C 77.75 % H-7.46 % 200-204 °C Sodium Fusion Test A portion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No observable change was noticed. Another portion of the sodium fusion filtrate was treated with...
How do you calculate the empirical and molecular formula of this unknown compound ? How do you calculate the molecular...
How do you calculate the empirical and molecular formula of
this unknown compound ? How do you calculate the molecular weight
?
Computer Unknown #6 Physical Properties 210 200 BP 131-133 °C White solid Sweet odor C 79.22 % H = 5.70% 180 Sodium Fusion Tests ervable cha pordon of the sodium fusion filtrate was treated with ferrous state and heated. It was then acidified with dilute sulfuric acid. No observable ona was noticed. Another portion of the sodium fusion...
What is the empirical and molecular formula ? What is the molecular weight ? Computer Unknown...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown #6 Physical Properties 210 200 BP 131-133 °C White solid Sweet odor C 79.22 % H = 5.70% 190 Sodium Fusion Tests Suurvable cha pordion of the sodium fusion filtrate was treated with ferrous state and heated. It was then acidified with dilute sulfuric acid. No observable and was noticed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable...
What is the empirical and molecular formula ? What is the molecular weight ? Computer Unknown...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 8 Physical Properties ВP Colorless Liquid Sweet odor C 77.75 % H 7.46 % 200-204 °C Sodium Fusion Test A portion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No observable change Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed. was noticed....
FUNCTIONAL GROUPS IDENTIFICATION LAB Professor Burton decided to select two unknowns from Group 1 (299 &...
FUNCTIONAL GROUPS IDENTIFICATION LAB
Professor Burton decided to select two unknowns from Group 1
(299 & 399) and two unknowns from Group 2 (499 & 699).
Below are the descriptions of his observations/results for each
unknown.
UNKNOWN #: 299
2,4-dinitrophenyl hydrazine Test: solution remains
colorless
Fehling’s Test: solution remains colorless
Lucas test: observed solution in 5-min intervals for 20
min., the solution remains
colorless
Tollen’s test: solution remains colorless
Iodoform Test: solution remains colorless
Bordwell-Wellman Test: solution became quite...
CHEM 104L ALCOHOLS AND PHENOLS Ferric Chloride and Lucas Test Compound Color of terric chloride test Observation and Time with Lucas Test y of d to rew tion int. 1-Butanol yellow white " clear 1-Hercanol yellow while clear 2-Propanol yellow white clean mely TO 2-Methyl-cyclohexanol yellow Why with cloudy white mical 2-Methyl-2-propanol yellow while loudy Phenol orang yellow brown and while the and cloudy Hexanol Unknown yellow clear the unknown Question Which alcohols have a positive reaction with the Lucas...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 9 Physical Properties MP 206-210 °C White solid C 77.86 % H=11.76 % Sodium Fusion Test A purtion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No obeervable change was noticed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed. Another portion was...
What is the empirical and molecular formula ? What is the
molecular weight ?
omputer Unknown #10 Physical Properties MP48-51 °C White solid C = 48.27% H=3.54% Sodium Fusion Test A portion of the sedium fi ltrate was treated with and heated. It was then acidified wit was noticed rate was treated with ferrous sulate o acidified with dilute sulfuric acid. No observable change Another portion of the sodium fusion filtrate was treated with te observable change was noticed. on...
How do you calculate the empirical and molecular formula of
this unknown compound ? How do you calculate the molecular weight
?
Computer Unknown # Physical Properties MP 48-51 °C White solid C = 48.27% H=3.54% Sodium Fusion Test A portion of the sodium fusion filtrate was treated and heated. It was then acidified wit was noticed. filtrate was treated with ferrous sulfate acidified with dilute sulfuric acid. No observable change Another portion of the sodium fus observable change was...
Use the information below to fill in the charts on the 1st
screenshot and then answer the questions on the 2nd screenshot.
UNKNOWN #: 399
2,4-dinitrophenylhydrazine Test: solution remains
colorless
Fehling’s Test: solution remains colorless
Lucas test: solution became cloudy immediately when
reagent was added
Tollen’s test: solution remains colorless
Iodoform Test: solution remains colorless
Bordwell-Wellman Test: no rxn was observed
UNKNOWN #: 499
2,4-dinitrophenylhydrazine Test: solution changed to a
yellow-orange color with some precipitation
Fehling’s Test: solution changed to...
How do you calculate the empirical and molecular formula of
this unknown compound ? How do you calculate the molecular weight
?
Computer Unknown # 8 Physical Properties ВP Colorless Liquid Sweet odor C 77.75 % H-7.46 % 200-204 °C Sodium Fusion Test A portion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No observable change was noticed. Another portion of the sodium fusion filtrate was treated with...
How do you calculate the empirical and molecular formula of
this unknown compound ? How do you calculate the molecular weight
?
Computer Unknown #6 Physical Properties 210 200 BP 131-133 °C White solid Sweet odor C 79.22 % H = 5.70% 180 Sodium Fusion Tests ervable cha pordon of the sodium fusion filtrate was treated with ferrous state and heated. It was then acidified with dilute sulfuric acid. No observable ona was noticed. Another portion of the sodium fusion...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown #6 Physical Properties 210 200 BP 131-133 °C White solid Sweet odor C 79.22 % H = 5.70% 190 Sodium Fusion Tests Suurvable cha pordion of the sodium fusion filtrate was treated with ferrous state and heated. It was then acidified with dilute sulfuric acid. No observable and was noticed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 8 Physical Properties ВP Colorless Liquid Sweet odor C 77.75 % H 7.46 % 200-204 °C Sodium Fusion Test A portion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No observable change Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed. was noticed....
FUNCTIONAL GROUPS IDENTIFICATION LAB
Professor Burton decided to select two unknowns from Group 1
(299 & 399) and two unknowns from Group 2 (499 & 699).
Below are the descriptions of his observations/results for each
unknown.
UNKNOWN #: 299
2,4-dinitrophenyl hydrazine Test: solution remains
colorless
Fehling’s Test: solution remains colorless
Lucas test: observed solution in 5-min intervals for 20
min., the solution remains
colorless
Tollen’s test: solution remains colorless
Iodoform Test: solution remains colorless
Bordwell-Wellman Test: solution became quite...
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