Question

In: Chemistry

Which of the following is the strongest base? CH3CH2OH CH3CH2O- CF3CH2O- CH3CH2S- CH3CH2NH- Please explain. I...

Which of the following is the strongest base?

CH3CH2OH

CH3CH2O-

CF3CH2O-

CH3CH2S-

CH3CH2NH-

Please explain. I can't find anything on this and I would really like to know how to determine this. Thanks!

Expert Solution

CH₃CH₂OH. CH₃CH₂O^- CF₃CH₂O^- CH₃CH₂S^- CH₃CH₂NH^-

We all know that acidity of a molecule depends upon the donating the protons and basicity depends upon accepting the proton.

Ability to donate proton can be evaluated by Ka value. So more the Ka value more the acidic nature. Negative logarithm of Ka is pKa. So less the pKa value more acidic in nature.

More the pKa value more basic in nature.

pKa value of ethanol is 15.9 and its conjugate base is ethoxide

pKa value of CF₃ CH₂OH is 12.4 and its conjugate base is CF₃CH₂O^-

pKa value of CH₃CH₂SH is. 10.6 and its conjugate base is CH₃CH₂S^-

pKa value of CH₃CH₂NH₂ is 35 and its conjugate base is CH₃CH₂NH^-

Among the above molecules order of acidity is

thioethanol > trifloroethanol > ethanol > ethyl amine

So order of basicity of their conjugate base reverse of above order because weaker the acid stronger its conjugate base

So, CH₃CH₂NH^-> C₂H₅O^-> CF₃CH₂O^->C₂H₅S^-> C₂H₅OH

So strongest base is CH₃CH₂N^- and hydrogen is hard to remove from the compound. So it is ready to accept the proton than to donate

queen_honey_blossom answered 2 years ago

Which of the following is the strongest base? Hints Which of the following is the strongest...

Which of the following is the strongest base? Hints Which of the following is the strongest base? fluoride ion ethyl anion amide ion hydroxide ion chloride ion SubmitMy AnswersGive Up Incorrect; Try Again; 5 attempts remaining Part M What is the general molecular formula for an acyclic hydrocarbon with two triple bonds? Hints What is the general molecular formula for an acyclic hydrocarbon with two triple bonds? CnH2n-6 CnH2n+2 CnH2n-2 CnH2n CnH2n-4 SubmitMy AnswersGive Up Part N Which of the...

Identify the strongest intermolecular force for each of the following molecules. CH3CH2OH CH3CH2COOH CH3NH2 CH3F C5H12...

Identify the strongest intermolecular force for each of the following molecules. CH3CH2OH CH3CH2COOH CH3NH2 CH3F C5H12 Rank the molecules above from fastest rate of evaporation to slowest. Draw the H-bonds that occur in H2O. Show in your drawing the H-bonds and the covalent bonds. Which of the following will conduct electricity in water? KCl NH4OH FeCl3 CH3CH2OH C6H6 NaCH3COO CH3NH2

Which method in bioethics is the strongest? Explain.

Which of the following is the strongest acid?

Which of the following is the strongest acid? HOI HOH HOCI HOBr HSH

1) Rank the following from the strongest acid to the weakest acid. Explain with reasons please....

1) Rank the following from the strongest acid to the weakest acid. Explain with reasons please. A) CH3CH2OH B) CH3OCH3 C) CH3—NH—CH3 D) CH3—C≡CH E) CH3—CH=CH2 2) Draw all possible isomers that have the molecular formula C5H12O and name them using the systematic IUPAC name. 3) The following compound has 2 isomers. One isomer has a dipole moment of 0 D, whereas the other has a dipole moment of 2.95 D. Propose structures for the 2 isomers that are consistent...

Which of these is considered the strongest nucleophile (is -CH3 stronger than I-) OH-, F-, I-,...

Which of these is considered the strongest nucleophile (is -CH3 stronger than I-) OH-, F-, I-, -CH3, Br- What factor gets priority in determining nucleophilic strength (i.e charge, electronegativity, size of atom)

Which of the molecules below is the strongest base? CH3O- (CH2)2N- Cl- HO- (CH3)2NH

a) Use the following reactions to explain the meaning of conjugate acid and base: i) CH3COOH...

a) Use the following reactions to explain the meaning of conjugate acid and base: i) CH3COOH + H2OCH3COO- + H3O+ ii)CO -2 +H OHCO - +OH- Write the order of Lowry-Bronsted acid and base in the above equations. b) Using the following equations, explain the statement “Water is amphoteric” i) HCl + H2OH3O+ + Cl- ii) NH3 + H2ONH4+ + OH- 323

Rank these compounds from weakest base to strongest base. A)4-methylaniline B)aniline C)trifluoromethyl aniline

Which of the following is typically the strongest and has the highest melting point? Select the...

Which of the following is typically the strongest and has the highest melting point? Select the correct answer below: ionic solids metallic solids covalent network solids molecular solids