name 5 characteristics that the solvent to be used must have when carrying out a reaction
Homework Answers
SOLUTION
The mains characteristics of the solvent that the solvent must have when carrying out a reaction
1. Solubility : Solubility of solute largely depend on the solvents. because it involves the free energy change
2. Stability : Solvent can affect the equillibrium constant of a reaction. so it has large impact on the stability of the reaction.
3. Reaction rates :The nature of the solvent can actually influence reaction rates and order of a chemical reaction.
4.Boiling point of solvent : The boiling point is an important property because it determines the speed of evaporation.
5. Density of solvent : Density of solvent is important for separation of solute and solvent.
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name 5 characteristics that the solvent to be used must have when
carrying out a reaction
5. When isolation of a product from a reaction mixture is carried out, a solvent is...
5. When isolation of a product from a reaction mixture is carried out, a solvent is generally used to extract the product before purification. What boiling point characteristic must this solvent have in order to facilitate its easy separation from the product you want to isolate?
Choose four requirements that must be met when choosing a solvent for recrystallization. Solute must be...
Choose four requirements that must be met when choosing a solvent for recrystallization. Solute must be soluble both at room temperature and the boiling point. Solvent must be easily removed (i.e., have a low boiling point and high vapor pressure). Solute may react with the solvent, as long as the reaction is incomplete. Impurities must be insoluble at the boiling point or soluble at room temperature. A small amount of crystals should be obtained. A fine powder should be obtained...
Name the salt which you have used in "salting out" experiment? 5. A. Name the salt...
Name the salt which you have used in "salting out"
experiment?
5. A. Name the salt which you have point) B. what is the purpose of "salting -out"? (1 point) 6. A. What is the difference between Equivalence point and end point? (1 point)
In Grignard reaction, the ether solvent must be very dry. What organic product is formed when...
In Grignard reaction, the ether solvent must be very dry. What organic product is formed when phenyl magnesium bromide reacts with water? OH a b d OOOO
a) Why do you use a minimum of hot water solvent in carrying out a recrystallization...
a) Why do you use a minimum of hot water solvent in carrying out a recrystallization of a particular compound? b) Why is it desirable to use suction filtration rather than gravimetric filtration in recovering the purified crystals? c) Why should the suction be released before the solid is washed with fresh solvent?
4) When carrying out a reaction in this course, and most research laboratories, it is required...
4) When carrying out a reaction in this course, and most research laboratories, it is required that you produce a chemical table for the reagents. A key part of that table is the chemical equivalence column. i) Explain what is meant by chemical equivalence and exactly how you determine these values.
Tetrachloroethylene (1) is used as a dry cleaning solvent; however, it is currently being phased out...
Tetrachloroethylene (1) is used as a dry cleaning solvent; however, it is currently being phased out due to environmental concerns. Does 1 have conformers? Why or why not? CI CI Cl 1
Tetrachloroethylene (1) is used as a dry cleaning solvent; however, it is currently being phased out due to environmental concerns. Does 1 have conformers? Why or why not? CI CI Cl 1
What are the desirable characteristics of a solvent to be used in the recrystallisation of a...
What are the desirable characteristics of a solvent to be used
in the recrystallisation of a solid product? (Hint: what is the
underlying purpose of doing recrystallisation, aside from making
the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
Prelab 2- Na Benzoate acidification (10 m) Diagram the reaction you are carrying out and name...
Prelab 2- Na Benzoate acidification (10 m) Diagram the reaction you are carrying out and name the reactants and products? 2m Are the reactants both soluble in water? 1m In the above equation what is the number of molecules of each reactant and what is the number of each of the molecular products? 1m What do you think is the identity of the solid precipitate seen in this reaction? 1m Which of the two products of the reaction will remain...
For a reaction to be exothermic, what must be true (do not consider solvent effects)? The...
For a reaction to be exothermic, what must be true (do not consider solvent effects)? The bonds in the products are _______ than the bonds in the reactants.
5. When isolation of a product from a reaction mixture is carried out, a solvent is generally used to extract the product before purification. What boiling point characteristic must this solvent have in order to facilitate its easy separation from the product you want to isolate?
Choose four requirements that must be met when choosing a solvent for recrystallization. Solute must be soluble both at room temperature and the boiling point. Solvent must be easily removed (i.e., have a low boiling point and high vapor pressure). Solute may react with the solvent, as long as the reaction is incomplete. Impurities must be insoluble at the boiling point or soluble at room temperature. A small amount of crystals should be obtained. A fine powder should be obtained...
Name the salt which you have used in "salting out"
experiment?
5. A. Name the salt which you have point) B. what is the purpose of "salting -out"? (1 point) 6. A. What is the difference between Equivalence point and end point? (1 point)
In Grignard reaction, the ether solvent must be very dry. What organic product is formed when phenyl magnesium bromide reacts with water? OH a b d OOOO
Tetrachloroethylene (1) is used as a dry cleaning solvent; however, it is currently being phased out due to environmental concerns. Does 1 have conformers? Why or why not? CI CI Cl 1
Tetrachloroethylene (1) is used as a dry cleaning solvent; however, it is currently being phased out due to environmental concerns. Does 1 have conformers? Why or why not? CI CI Cl 1
What are the desirable characteristics of a solvent to be used
in the recrystallisation of a solid product? (Hint: what is the
underlying purpose of doing recrystallisation, aside from making
the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
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