What is the relationship between pKa pKb and PKW?
A lower pKb value indicates a stronger base. pKa and pKb are related by the simple relation: pKa + pKb = 14.
How do you find pKa from pKb?
To get the pKb of the base (B) you MUST subtract the pKa from 14. The reason for this is that the pOH is actually what equals the pKb. pKb = 14 – pKa H+ in EXCESS that has been added.
What is pKa and pKb used for?
pH, pKa, pKb, Ka, and Kb are used in chemistry to describe how acidic or basic a solution is and to gauge the strength of acids and bases. The pH scale is the most familiar measure of acidity and basicity, but pKa, pKb, Ka, and Kb are better for predicting acid and base strength and their reactions.
Which is the correct formula PKW or PKB?
Instead, you can either do pKa (H2SO3) + pKb (HSO3-) = pKw, OR you can do pKa (HSO3-) + pKb (SO3 2-) = pKw. Now, why is this true? I like to think of it this way. A strong acid (low pKa) will have a weak conjugate base (high pKb), and a weak acid (high pKa) will have a comparatively strong conjugate base (low pKb).
What’s the difference between Ka, PKA, and KB?
Ka and pKa relate to acids, while Kb and pKb deal with bases. Like pH and pOH, these values also account for hydrogen ion or proton concentration (for Ka and pKa) or hydroxide ion concentration (for Kb and pKb).
Are there any relation between pH, pOH, PKA and PKW?
In a previous post the terms pH, pOH, pKa, pKb, and pKw were defined. Additionally, there is a relation between pH and pOH and a relation between pKa and pKb which are summarized by the following equations:
What is the relationship between pKa1 and pKb3?
In the same way that pKa1 refers to the first proton lost, pKb1 refers to the first proton gained, which would go to the group that is the strongest base. The least favorable, highest pKb then, pKb3, must go to the conjugate of the group that holds pKa1: the carboxylic acid.