When pKa is less than pH

[Russell Chuang 1J]

When pKa is less than pH, is a conjugate produced or does it make it a weak base?

[amar_151]

If pKa is less than pH, the solution is more basic; therefore, the acid will deprotonate and give off hydronium ions to form A-. This increases the acidity of the solution. The opposite is true if ph is less than pKa.

[Anthony Tam]

When the pH is less than the pKa, then the protonated species is more dominant. When the pH is greater than the pKa, then the deprotonated species is more dominant. Remember that Ka is equal to the amount of products over the amount of reactants in the general reaction
(HA + H2O -> H+ + A-), where HA is the protonated species and A- is the deprotonated species.

[Mekenna Faulkner]

If the pKa is less than the pH then the solution will be basic. IN this case the acid will deprotenate, giving off hydronium atoms, which then increases the acidity.

[zackdouchy]

When the pKa is less than the pH that means that the conjugate base is less prevalent than its parent acid. If you calculate the ratio of the pka to the pH you see that the ratio is less than 1 and thus the conjugate base is less prevalent than the parent acid in solution.

[chemoyku dis 1B]

When pKa is less than pH, is a conjugate produced or does it make it a weak base?

If the PKa is less than the pH it is in a more acidic solution. This means that in the B + H2O = BH+ +OH- equation, the equilibrium will lie to the left so the protonated base (BH+) will increase more to neutralise the acidicity. (The conjugate is produced more, but the base still exists a bit in its neutral form in the solution.)

I hope this somehow helps!

[Michael Crannell 1H]

I had in my notes an inequality for When pKa < pH, the sign is flipped to result in A- > H+

[Carlie_Dorostkar_1A]

When pKa is less than the pH of the solution the acid will be deprotonated, and will become a conjugate base.

[Jessica Cornelia Hongarta 1G]

Hi! So, when the pKa is less than the pH, the solution is more basic. So, the acid will deprotonate (to neutralize) , giving off the hydronium ion and your conjugate base.