Why do you think t-butanol was used as the solvent instead of water? Molecular Weight Determination by Freezing Point DepressionObject:Determine the molecular mass of an unknown sample.Procedure:Add about 6 g of the solvent t-butanol to a test tube.Note – (Ks= 9.1°C/m)1.2.Place the test tube containing the t-butanol in a cold-water bath.3.Stir the liquid with a thermometer to determine the temperature in which t-butanol freezes.Do this twice using the same sample.4.Remove the test tube from the cold water bath and add about 0.4 g of the unknown sampleto the liquid t-butanol. Make sure the unknown sample dissolves completely.5.Repeat steps 2 and 3 with the test tube containing t-butanol and the unknown sample.Data:Mass of solvent (t-butanol)Freezing temperature of solvent°C°CMass of the unknown samplegFreezing temperature of the solution°C°CResults:Change in freezing temperature (AT;)°C°CMolality (m) of unknown solutionmmMolecular mass of unknown sample_g/mole_g/mole

A pure substance has a certain physical properties such as boiling point, melting point or freezing…

Answered: Why do you think t-butanol was used as…

Science

Chemistry

Why do you think t-butanol was used as the solvent instead of water?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: What is meant by the following terms? Explain with an example for each.(i) Target molecules as used…

A: Given: (i) Target molecules as used in medicinal chemistry(ii) Food preservative(iii) Non-ionic…

Q: Why ethylene glycol is not categorized under glycol liquid desiccant?

A: There are two types of Glycol.They are i-Ethylene Glycol ii-Propylene Glycol

Q: Based on the given structures, determine which has a higher boiling point and why?

A: Boiling point is directly proportional to molar mass and inversely proportional to branching

Q: A) the possible methods to purify cyclohexene from cyclohexanol and other materials produced in the…

A: Purification of Cyclohexene from cyclohexanol can be done via these following ways - First one is…

Q: Answer the following question.

A: Hydrophilic, as defined as having a strong affinity for water.” This essentially means the ability…

Q: Explain why aqueous NaOH solution can be stored indefinitely in polyethylene bottles, but spilling…

Q: 2.how much water should be added to 100ml of 95% ethanol to make 50%rthanol

Q: Draw the three possible resonance structures for an acid bromide, RCOBr. Then decide if RCOBr is…

A: Resonance is the delocalization of electrons through the pi bonds.

Q: ** The "organic compound" used in the "Ester test" that was performed in the video is a carboxylic…

A: Ester is the organic compound and have the fruity smell.

Q: Are Benyzylmethylamine and N-methylaniline are the same? Trimethylamine and trimethylammonium also…

A: No. Benzyl methylamine and N-methylaniline are not the same. Structure of Benzyl methylamine And…

Q: What is the name of the product?

A: Detail mechanistic pathway is given below and the name of the product is also given below

Q: Mention Propranolol two most important medicinal uses.

A: According to the question, we need to mention two most important medicinal uses of propranolol. We…

Q: 3. Write equations to show how isopropyl alcohol might be prepared: (a) from an olefin; (b) from an…

A: Isopropyl alcohol can be synthesized as follows

Q: True or false Is benzaldehyde an Alkene? would you expect benzaldehyde to create a precipitate…

Q: 2. Write the equation for the reaction of acetanilide with molecular bromine (for the organic…

A: The objective of the question is to write the chemical reaction equation for the reaction of…

Q: The most common industrial application of diethyl phthalate (or more generally, phthalate esters) is…

A: Plasticizer are low molecular weight substances which are added to the plastics or elastomer to…

Q: Using your knowledge, explain why 1- dimethyl 2- bromopropane is difficult to purify using…

A: Answer. It's because major product of 2-methylbutene is 2-bromo-2-methylbutane which very…

Q: 0.0020 moles of benzaldehyde was used along with 0.0010 moles of acetone. A 2:1 molar ratio. This…

A: The objective of the question is to determine the theoretical yield of a chemical reaction involving…

Q: Give an example of an azeotrope and give one method/technique that people have used to separate an…

A: Given:Cyclohexane and tolueneGive an example of an azeotrope and give one method/technique that…

Q: Could I use fractional distillation to separate 1-butanol from two other unknown compounds? How…

A: Fractional distillation is a method for separating liquid from a mixture of 2 or more liquids. For…

Q: Which of these functional group tests will not differentiate between 3-butenal and n-butanol? a:…

A: Given are two organic compounds.3-butenal and n-butanol.3-butenal has two functional groups ,…

Q: Is chlorophyll soluable in 2-propanol? Why or why not?

A: Chlorophyll is a large carbon chain molecule with an ionic tail and molecular formula C₅₅H₇₂O₅N₄Mg…

Q: Why is it bad to put too much water as the solvent when recrystillizing benzoic acid?

A: A question based on purification, which is to be accomplished.

Q: N 2. Orb a. What does this product smell like? b. What natural product does it come from?

A: The question is based on the concept of organic synthesis.We need to synthesize the product using…

Q: Write the reaction for t-butyl bromide and sodium methoxide in methanol.

A: The substitution reaction is defined as a reaction in which the functional group of one chemical…

Q: Explain in detail how anthracene will mix with toluene.

A: Anthracene is a polycyclic aromatic hydrocarbons solid substance which contains…

Q: Can napthalene dissolve in cooking oil?

Q: Out of Methyl Ethyl Ketone, Toluene, Cyclohexane, Methanol, and acetone. Identify the functional…

A: Different functional groups.

Q: NH2 H3C CH, но H,N., A NH2 6 M H,SO, H3C. H,C H3C. H,C HO, H,C CH, CH CH NaOAc…

Q: 18. In the IUPAC name for the following compound, the -Br group is located on carbon number ?

A: While giving IUPAC name to a compound, double bond has been given priority over halogens

Q: 14. Write the name of different product formed when primary (aniline), secondary (N-methylaniline)…

A: aniline react with nitrous acid diazonium salt formed.

Q: . (a) Write the molecular formula of acetylsalicylic acid (see Fig. 7.34a).(b) An aspirin…

A: (a) Acetyl salicylic acid is commonly known as aspirin. The molecular formula of this drug is…

Q: Draw hydrogen bonding pattern that water forms with acetamide and with pyridine

A: ->Hydrogen bond is formed between electron deficient hydrogen atom and electronegative atom.

Q: How does ph, temperature and plastic wrap affect polyphenol oxidize?

A: To describe the effect of temperature, pH,and plastic wrap on Polyphenol oxidase

Q: Explain why benzocaine precipitates during the neutralization.

A: Under acidic conditions, the amine group on benzocaine is protonated. This introduces a positive…

Q: Select the compound that is more soluble in water. Select one: Opropyl ethanoate Omethyl methanoate

A: the given two compounds are esters.The structure of propyl ethanoate is CH3COOCH2CH2CH3The structure…

Q: What methods were used to distinguish the isomers of dibenzaldehyde? Explain why these methods pick…

A: What methods were used to distinguish the isomers of dibenzaldehyde? Explain why these methods pick…

Q: If you add HCl to the mixture sample, what would happen to 4-nitroaniline? And why?

A: When HCl is added to the mixture of 4-nitroaniline then it does not react with the mixture and…

Q: Where should you dispose a mixture of tetrachloromethane and water? (A) Alkali waste B…

A: A question based on waste management, which is to be accomplished .

Question

Why do you think t-butanol was used as the solvent instead of water?

Molecular Weight Determination by Freezing Point Depression
Object:
Determine the molecular mass of an unknown sample.
Procedure:
Add about 6 g of the solvent t-butanol to a test tube.
Note – (Ks= 9.1°C/m)
1.
2.
Place the test tube containing the t-butanol in a cold-water bath.
3.
Stir the liquid with a thermometer to determine the temperature in which t-butanol freezes.
Do this twice using the same sample.
4.
Remove the test tube from the cold water bath and add about 0.4 g of the unknown sample
to the liquid t-butanol. Make sure the unknown sample dissolves completely.
5.
Repeat steps 2 and 3 with the test tube containing t-butanol and the unknown sample.
Data:
Mass of solvent (t-butanol)
Freezing temperature of solvent
°C
°C
Mass of the unknown sample
g
Freezing temperature of the solution
°C
°C
Results:
Change in freezing temperature (AT;)
°C
°C
Molality (m) of unknown solution
m
m
Molecular mass of unknown sample
_g/mole
_g/mole

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

2. Draw out the following compounds. a. N-methylaniline b. Triisopropylamine c. N,N-dipropylhexylamine d. 1,5-pentanediamine (Also known as Cadaverine for its smell)
How do we separate sodium hydroxide from the crude mixture of p-anisaldehyde, acetophenone, and ethanol.
What functional group (carboxylic acid or amine) should react with a base (NaOH)?
Morphine, procaine, and xylocaine are all solids or oily organic compounds in pure form. Why are they reacted with mineral acids such as hydrochloric acid, sulfuric acid, or phosphoric acid for injection? Why is nitric acid avoided for this process or purpose?
Look at the structures of aniline, N-methyl aniline and Triethylamine rank these compounds in order of increasing solubility in water.
You have a mixture of an aryl halide and a carboxylic acid that you wish to separate(both are solids). Both are soluble in diethyl ether. Explain ALL the steps you would take to obtain the two compounds in pure form from your sample.
What is the difference between protophobic and protophilic solvents ?
a)Why was ethanol added to the reaction mixture? b)Explain how soap acts during cleaning.