The strongest acid is

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The strength of an acid is directly proportional to its $K_a$ value and inversely proportional to its $pK_a$ value. $pK_a = -\log(K_a)$. We conver

Vedclass · Accepted Answer

$HA_3\,\,(pK_a = 2)$

Vedclass · Answer

(C) The strength of an acid is directly proportional to its $K_a$ value and inversely proportional to its $pK_a$ value. $pK_a = -\log(K_a)$. We convert all values to $pK_a$ for comparison: $HA_1: pK_a = 10$. $HA_2: K_a = 10^{-4} \implies pK_a = -\log(10^{-4}) = 4$. $HA_3: pK_a = 2$. $HA_4: K_a = 10^{-7} \implies pK_a = -\log(10^{-7}) = 7$. Comparing the $pK_a$ values: $2 Since the acid with the lowest $pK_a$ is the strongest,$HA_3$ is the strongest acid.

Similar Questions

Which one of the following acids is the weakest?

Explain ionization and ionization constant in di- and polyprotic acids.

Which of the following is the weakest base?

The conjugate base of phosphorus acid is $x$. The conjugate base of oleum is $y$. What are $x$ and $y$,respectively?

Which of the following equilibria represents a $Lewis$ acid-base reaction but not a $Br\o nsted$ acid-base reaction?

Vedclass Test Series

Exam Paper Generator

Online Exam Module