Acetonitrile is a very good polar solvent for many organic reactions and has the following formula...
Acetonitrile is a very good polar solvent for many organic reactions and has the following formula CH3CN. Give the geometry and hybridization of the bold C atom. Would the boiling point of acetonitrile be higher or lower boiling point than water? (4 pts)
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Acetonitrile is a very good polar solvent for many organic
reactions and has the following formula...
Acetonitrile has the formula CH3CN. Match the correct hybridization and electron geometry for each nonhydrogen atom.
Acetonitrile has the formula CH3CN. Match the correct hybridization and electron geometry for each nonhydrogen atom.
Which of the following statements is false about NH3 and PH3 ? Your answer: O NH3...
Which of the following statements is false about NH3 and PH3 ? Your answer: O NH3 molecules are polar. O Dipole-dipole forces and dispersion forces exist between PH3 molecules. o (N) atom makes sp3 hybridization in NH3 molecule. O PH3 molecule has trigonal pyramidal geometry. O Normal boiling point of PH3 is higher than that of NH3.
1h. A certain pure solvent freezes at 39.8°C and has a freezing point depression constant Kf...
1h. A certain pure solvent freezes at 39.8°C and has a freezing point depression constant Kf = 0.777°C/m. What is the predicted freezing point (in °C) of a solution made from this solvent that is (1.90x10^0) m in a non-electrolyte solute? 1i. When (8.23x10^1) g of a non-electrolyte is dissolved in (5.2600x10^2) g of a solvent (with Kb = 0.416°C/m) the boiling point of the solution is 1.50°C higher than the boiling point of the pure solvent. What is the...
Part II. True or False (16 pts) 1. CH3CH2CH2CH2 is the formula for a saturated hydrocarbon....
Part II. True or False (16 pts) 1. CH3CH2CH2CH2 is the formula for a saturated hydrocarbon. 2. The physical properties of alkynes are very different from those of alkenes. 3. 2-butyne can exist as cis- and trans-isomers. 4. Only alcohols contain an oxygen bearing functional group. 5. Replacing the O with an S in the following compound converts the compound to a thiol. 6. The boiling point for ethers should be much higher than alkanes of similar formula mass. This...
In my organic chemistry lab we are performing a gas chromatography experiment and I need help...
In my organic chemistry lab we are performing a gas
chromatography experiment and I need help with our prelab
assignment, thanks!
Question 3 1 pts If compound A elutes (comes off) a GC column earlier than compound B in a temperature gradient GC run. What can be inferred about their respective boiling points? Compound A probably has a lower boiling point than that of compound B. Compound A and B have the same boiling point. Elution time does not correlate...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its boiling point b) Higher temperature than its boiling point c) At its boiling point d) None of the mentioned 2. In steam distillation, the liquid boils when th allation, the liquid boils when the sum of the organic liquid vapor pressure and the water vapor pressure is: a) Greater than atmospheric pressure b) Lesser than atmospheric pressure Equals to atmospheric pressure d) None of...
in general which group of metals, nonmetals, organic compounds and aqueous solutions has the lowest specific...
in general which group of metals, nonmetals, organic compounds
and aqueous solutions has the lowest specific heat
QUESTION 3 If you put an object at room temperature into boiling water at 100.°C, which is continually heated by a Buns burner, what temperature will the object achieve in an hour? Assume that the water does not completely evaporate and there is enough water in the beaker to keep the object submerged. the temperature of the boiling water (100°C) Much lower than...
Which property or properties would be the most useful in characterizing an organic compound that a...
Which property or properties would be the most useful in characterizing an organic compound that a solid at room temperature. melting point 1L refractive index IL boiling pointIV. color is a solid at room a. b. II and IV f. II and II1 js a lvguid a rooeriy or propertis would be the most usctaul in characteriving an organic compound that I. melting point I. refractive index III. boiling pointIV. color a. b. III and IV c.? f. II and...
1) Define the following: matter, element, atom, trace element, proton, electron, neutron, atomic number, mass number,...
1) Define the following: matter, element, atom, trace element, proton, electron, neutron, atomic number, mass number, isotopes, radioisotope, molecule, compound, salt, ion. 2) List the 6 elements that make up about 99% of the weight of an organism. 3) What are the functions of the trace elements iron, fluorine (fluoride), and iodine? 4) An iodine deficiency can result in goiter. True/False 5) Where are protons, neutrons and electrons located? 6) Can you determine the atomic number and mass number from...
Question 17 1 pts What solubility properties are important in the selection of a solvent for...
Question 17 1 pts What solubility properties are important in the selection of a solvent for recrystallisation? sparingly soluble in hot solvent and readily soluble in cold solvent readily soluble in both hot and cold solvent sparingly soluble in both hot and cold solvent readily soluble in hot solvent and sparingly soluble in cold solvent Question 18 1 pts How would you modify the procedure given in the Laboratory Manual if you did not know which solvent to use? if...
Which of the following statements is false about NH3 and PH3 ? Your answer: O NH3 molecules are polar. O Dipole-dipole forces and dispersion forces exist between PH3 molecules. o (N) atom makes sp3 hybridization in NH3 molecule. O PH3 molecule has trigonal pyramidal geometry. O Normal boiling point of PH3 is higher than that of NH3.
Part II. True or False (16 pts) 1. CH3CH2CH2CH2 is the formula for a saturated hydrocarbon. 2. The physical properties of alkynes are very different from those of alkenes. 3. 2-butyne can exist as cis- and trans-isomers. 4. Only alcohols contain an oxygen bearing functional group. 5. Replacing the O with an S in the following compound converts the compound to a thiol. 6. The boiling point for ethers should be much higher than alkanes of similar formula mass. This...
In my organic chemistry lab we are performing a gas
chromatography experiment and I need help with our prelab
assignment, thanks!
Question 3 1 pts If compound A elutes (comes off) a GC column earlier than compound B in a temperature gradient GC run. What can be inferred about their respective boiling points? Compound A probably has a lower boiling point than that of compound B. Compound A and B have the same boiling point. Elution time does not correlate...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its boiling point b) Higher temperature than its boiling point c) At its boiling point d) None of the mentioned 2. In steam distillation, the liquid boils when th allation, the liquid boils when the sum of the organic liquid vapor pressure and the water vapor pressure is: a) Greater than atmospheric pressure b) Lesser than atmospheric pressure Equals to atmospheric pressure d) None of...
in general which group of metals, nonmetals, organic compounds
and aqueous solutions has the lowest specific heat
QUESTION 3 If you put an object at room temperature into boiling water at 100.°C, which is continually heated by a Buns burner, what temperature will the object achieve in an hour? Assume that the water does not completely evaporate and there is enough water in the beaker to keep the object submerged. the temperature of the boiling water (100°C) Much lower than...
Which property or properties would be the most useful in characterizing an organic compound that a solid at room temperature. melting point 1L refractive index IL boiling pointIV. color is a solid at room a. b. II and IV f. II and II1 js a lvguid a rooeriy or propertis would be the most usctaul in characteriving an organic compound that I. melting point I. refractive index III. boiling pointIV. color a. b. III and IV c.? f. II and...
Question 17 1 pts What solubility properties are important in the selection of a solvent for recrystallisation? sparingly soluble in hot solvent and readily soluble in cold solvent readily soluble in both hot and cold solvent sparingly soluble in both hot and cold solvent readily soluble in hot solvent and sparingly soluble in cold solvent Question 18 1 pts How would you modify the procedure given in the Laboratory Manual if you did not know which solvent to use? if...
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