Here’s a explanation:
The acid dissociation constant (Ka) tells how easily an acid loses its hydrogen ions in water.
- A large Ka means the acid gives up hydrogen ions easily → it’s a strong acid.
- A small Ka means the acid holds onto hydrogen ions → it’s a weak acid.
Significance:
- It helps predict the strength of an acid.
- It allows calculation of pH for solutions of weak acids.
- It is used in designing buffer solutions.
In short: Ka shows how strong an acid is and helps understand its behavior in water.