Why is CH3CO2 a weak base?

Re: Why CH3CO2- not strong base as it’s weak acid? The pKa for acetic acid is 4.75. Therefore pKb = 14 – 4.75 = 9.25 for the acetate ion and comparing to the pKb values, it is not that strong a base. The higher the pKb, the weaker the proton accepting power of the base.

Is CH3COO a strong base or a weak base?

A weak acid (e.g. CH3COOH) is in equilibrium with its ions in water and its conjugate (CH3COO–, a weak base) is also in equilibrium in water.

Is CH3CO2 a nucleophile?

In our first option(CH3CO2-), resonance is occurring between the two oxygen atoms, decreasing the electron density on oxygen atom. Nothing like this occurs in our second option(CH3CH2O-) which means it has more electron density than the first compound, hence second compound is more nucleophilic.

Is NaCN a weak nucleophile?

Weak nucleophiles are neutral and don’t bear a charge. Example 1 uses NaCN (a strong nucleophile).

Is CH3COO a strong or weak nucleophile?

Hope this helps. No. It’s a weak base because it’s conjugate acid is weak.

Is CH3COO or OH a better Nucleophile?

OH – is a stronger base than CH3COO- because conjugate acid of OH- ie. H2O is weaker than conjugate acid of CH3COO- ie.

How can you distinguish between a strong nucleophile and a weak nucleophile?

Nucleophilicity increases as the density of negative charge increases. An anion is always a better nucleophile than a neutral molecule, so the conjugate base is always a better nucleophile. A highly electronegative atom is a poor nucleophile because it is unwilling to share its electrons.

Is NaCN a strong base and strong nucleophile?

With this info in mind, the cyanide anion (CN¯) is a strong nucleophile, as long as it works in non protic polar solvents like, say, ethanol. NaCN is no nucleophile and, when dissolved in water (thus forming Na⁺ cations and CN¯ anions), CN¯ turns out to be a so-so nucleophile.