The density of a monobasic strong acid (Molar mass 24.2 g/mol) is 1.21 kg/L. The volume of its solution required for the complete neutralization of 25 mL of 0.24 M NaOH is ______ mL (Nearest integer) [2023]

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Solution

Q.
The density of a monobasic strong acid (Molar mass 24.2 g/mol) is 1.21 kg/L. The volume of its solution required for the complete neutralization of 25 mL of 0.24 M NaOH is ______ $\times 10^{- 2}$ mL (Nearest integer) [2023]

Ans.
(12)

$Molarity of acid = \frac{1.2 \times 10^{3}}{24.2} = \frac{1000}{20} = 50 M$

$Neutralization reaction:$

$HA + NaOH ⟶ NaA + H_{2} O$

$M_{1} V_{1} = M_{2} V_{2}$

$[50] \times V = [0.24 \times 25]$

$V = 0.12 ml$

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