
Interpretation:
The strength of weak acid is to be related to its conjugate base.
Concept introduction:
The concept of conjugate acid-base pair is given by Bronsted-Lowry.
According to it,
Acid is a substance which donate hydrogen ion and Base is a substance which accept hydrogen ion.
When acid donates

Answer to Problem 18SSC
Stronger the acid, weaker is its conjugate base and vice-versa.
Explanation of Solution
According to Bronsted-Lowry,
If an acid is strong, its conjugate base is weak and if acid is weak then conjugate base is strong. For example:
Here
Here
Thus, if an acid is strong, its conjugate base is weak and if acid is weak then conjugate base is strong.
Chapter 18 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
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