Chromotography is used to separate components of a mixture that are dissolved in a fluid solvent...
Chromotography is used to separate components of a mixture that are dissolved in a fluid solvent based on their absorption to a solid surface. What makes this occur on the molecular level?
Homework Answers
Add Answer to:
Chromotography is used to separate components of a mixture that
are dissolved in a fluid solvent...
In my Organic Chemistry lab this week, we used Thin Layer Chromotography to determine the components...
In my Organic Chemistry lab this week, we used Thin Layer Chromotography to determine the components of various brand name pain killers on the market (unknown analgesic granulation). In this situation, how does hydrogen bonding and eluent polarity affect the Rf value? (where Rf= distance traveled by solute/ distance traveled by solvent)
Recrystallization is commonly used in the organic laboratory as a way to: A) remove a reaction...
Recrystallization is commonly used in the organic laboratory as a way to: A) remove a reaction solvent. B) purify an organic liquid. C) separate the components of a liquid mixture. D) purify an organic solid. E) all of the above 1. What is a limiting reactant? A) reactant with the smallest initial mass B) reactant with the largest initial mass C) reactant that is completely consumed during a chemical reaction D) reactant that is NOT completely consumed during a chemical...
2. Can Na2SO4 be used as a precipitating agent to separate a mixture of Fe2+ and...
2. Can Na2SO4 be used as a precipitating agent to separate a mixture of Fe2+ and Ca2+? Explain. 3. Can ammonia be used as a precipitating agent to separate a mixture of Al3+ and Cu2+? Explain. Describe a possible step-by-step procedure for separating a mixture of Ca2+, Al3+, Fe3+, and Zn2+. Be clear about what precipitating agent you will add in what order, and what will get filtered out at each step. At the end, you should have each of...
The common laboratory solvent chloroform is often used to purify substances dissolved in it. The vapor...
The common laboratory solvent chloroform is often used to purify substances dissolved in it. The vapor pressure of chloroform, CHCl3, is 173.1 mm Hg at 25°C. In a laboratory experiment, students synthesized a new compound and found that when 14.30 grams of the compound were dissolved in 246.0 grams of chloroform, the vapor pressure of the solution was 168.8 mm Hg. The compound was also found to be nonvolatile and a nonelectrolyte. What is the molecular weight of this compound?...
1.describe how you would separate a mixture of acetanilide and sand 2.water is a convenient solvent...
1.describe how you would separate a mixture of acetanilide and sand 2.water is a convenient solvent for recrsytallizing what type of compound. 3. why is fluted filter paper usually used when doing the hot filtration during a recrystallization. 4.describe how seed crystal are used in recrystallization. 5.explain the adage " like dissolve lik
The common laboratory solvent diethyl ether (ether) is often used to purify substances dissolved in it....
The common laboratory solvent diethyl ether (ether) is often used to purify substances dissolved in it. The vapor pressure of diethyl ether, CH,CH,OCH CH3, is 463.57 mm Hg at 25°C. In a laboratory experiment, students synthesized a new compound and found that when 12.69 grams of the compound were dissolved in 183.3 grams of diethyl ether, the vapor pressure of the solution was 450.73 mm Hg. The compound was also found to be nonvolatile and a non-electrolyte. What is the...
The common laboratory solvent ethanol is often used to purify substances dissolved in it. The vapor pressure of ethanol...
The common laboratory solvent ethanol is often used to purify substances dissolved in it. The vapor pressure of ethanol, CH2CH,OH, is 54.68 mm Hg at 25 °C In a laboratory experiment, students synthesized a new compound and found that when 35.52 grams of the compound were dissolved in 246.7 grams of ethanol, the vapor pressure of the solution was 53.38 mm Hg. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight of this...
Given a solid mixture of the following molecules determine a separate scheme that can be used...
Given a solid mixture of the following molecules determine a separate scheme that can be used to separate the mixture using acid base extraction. - 2-hydroxybenzoic acid - 4-chloroanaline - trans-stillbene The following solvents and reagents will be available for use during the experiment 1. 5% sodium bicarbonate 2. 10% sodium hydroxide 3. Saturated sodium chloride 4. 5% hydrochloric acid 5. 6 M hydrochloric acid 6. Diethyl ether 7. Anhydrous sodium or magnesium sulfate *Can you include a experimental procedure...
Solutions??? Lab Partner(s): Isolation of Active Ingredients of Excedrin-Week 1 Task A: Separate the mixture of...
Solutions???
Lab Partner(s): Isolation of Active Ingredients of Excedrin-Week 1 Task A: Separate the mixture of active ingredients of Excedrin from the exciplents in the toblet. 01. Complete the following flowchart. Based on step 1 you performed in the lab. Moture of aspirin, caffeine and acetaminophen along with insoluble excipients Solvent a itrate residue Q3. Based on step 2 you performed, complete the following flowchart to depict the scheme of separation of acetaminophen from insoluble excipients. Mixture of acetaminophen and...
I have a mixture of three compounds and I want to separate them. The compounds are...
I have a mixture of three compounds and I want to separate them. The compounds are ethyl aminobenzoate (50%), benzoin (40%), and 1,4-dibromobenzene(10%). I started the experiment by dissolving the mixture in the methylene chloride, then I added HCl, so I got two layers, first one is aqueous layer that contain ethyl aminobenzoate, and the second one is organic layer that contain benzoin and 1,4-dibromobenzene. After that I add NaOH to aqueous layer and I got a solid, then I...
Recrystallization is commonly used in the organic laboratory as a way to: A) remove a reaction solvent. B) purify an organic liquid. C) separate the components of a liquid mixture. D) purify an organic solid. E) all of the above 1. What is a limiting reactant? A) reactant with the smallest initial mass B) reactant with the largest initial mass C) reactant that is completely consumed during a chemical reaction D) reactant that is NOT completely consumed during a chemical...
The common laboratory solvent chloroform is often used to purify substances dissolved in it. The vapor pressure of chloroform, CHCl3, is 173.1 mm Hg at 25°C. In a laboratory experiment, students synthesized a new compound and found that when 14.30 grams of the compound were dissolved in 246.0 grams of chloroform, the vapor pressure of the solution was 168.8 mm Hg. The compound was also found to be nonvolatile and a nonelectrolyte. What is the molecular weight of this compound?...
The common laboratory solvent diethyl ether (ether) is often used to purify substances dissolved in it. The vapor pressure of diethyl ether, CH,CH,OCH CH3, is 463.57 mm Hg at 25°C. In a laboratory experiment, students synthesized a new compound and found that when 12.69 grams of the compound were dissolved in 183.3 grams of diethyl ether, the vapor pressure of the solution was 450.73 mm Hg. The compound was also found to be nonvolatile and a non-electrolyte. What is the...
The common laboratory solvent ethanol is often used to purify substances dissolved in it. The vapor pressure of ethanol, CH2CH,OH, is 54.68 mm Hg at 25 °C In a laboratory experiment, students synthesized a new compound and found that when 35.52 grams of the compound were dissolved in 246.7 grams of ethanol, the vapor pressure of the solution was 53.38 mm Hg. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight of this...
Solutions???
Lab Partner(s): Isolation of Active Ingredients of Excedrin-Week 1 Task A: Separate the mixture of active ingredients of Excedrin from the exciplents in the toblet. 01. Complete the following flowchart. Based on step 1 you performed in the lab. Moture of aspirin, caffeine and acetaminophen along with insoluble excipients Solvent a itrate residue Q3. Based on step 2 you performed, complete the following flowchart to depict the scheme of separation of acetaminophen from insoluble excipients. Mixture of acetaminophen and...
Most questions answered within 3 hours.
-
Which statement is true?
a. Unless directed otherwise, the computer automatically
executes C. statements one before...
asked 43 seconds ago -
When a new company is considering Speed to Market for a product
launch, which would provide...
asked 38 minutes ago -
bacteria and their metabolites could either promote or protect from
cancer. Explain one of these cases...
asked 47 minutes ago -
Use the sample data and confidence level given below to complete
parts (a) through (d).
A...
asked 1 hour ago -
During laser vision correction, a brief burst of 193 nm
ultraviolet light is projected onto the...
asked 1 hour ago -
1 ) How well does the initial speed, v0,calculated from Equation
4 agree with the value...
asked 1 hour ago -
1. What is the p-value for a right tail test for a single
proportion with a...
asked 2 hours ago -
A technician compares repair costs for two types of microwave
ovens (type I and type II)....
asked 1 hour ago -
A certain statistical test is designed so that it fails 2% of
the time. Suppose that...
asked 1 hour ago -
For the reaction: H2S(g) + 2H2O(l)3H2(g) + SO2(g) H° = 295 kJ
and S° = 295...
asked 2 hours ago -
The first-order reaction C4H8→2C2H4 has the reaction constant k
of 7.60×10−3 s−1. If the initial concentration...
asked 2 hours ago -
46.3 mL of a 0.0999 M solution of this acid (HOOC-(CH2)2-COOH)
is titrated to the equivalence...
asked 2 hours ago