Question

how is the strength of acid and base decided ​

Answer 1

Answer:

The higher the dissociation constant the stronger the acid or base. Since electrolytes are created as ions are freed into solution there is a relationship between the strength of an acid, a base, and the electrolyte it produces. Acids and bases are measured using the pH scale.

Explanation:

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Answer 2

1. The less electronegative an atom (the later it appears in the periodic table), the more basic it likely is.
2. If electron density can be delocalized by resonance, the molecule is a weaker base as it is less interested in losing electrons and accepting a proton. Resonance weakens a base because it makes a molecule more stable.
3. An electronegative atom might reduce basicity due to inductive effects. This is because such an atom stabilizes electron density, reducing the need for sharing it with a proton.