Question

conductivity of dilute HCl acid is greater than that of acetic acid why

Answer 1

conductivity of dilute HCl acid is greater than that of acetic acid because it contains more free ions than the acetic acid

Answer 2

The conductivity of dilute HCl acid is greater than that of acetic acid.

Explanation:

• In the given scenario both the Hydrochloric acid as well as the acetic acid conduct the electricity. But the former conducts more than the latter.
• The reason behind this is that the rate of dissociation of molecules into ions.
• In the case of a strong acid such HCl, when it is dissolved in water, it gets completely dissociated into a negative ion and positive ion.
• There is no reverse reaction, means the formation of the reactant by the product again. Thus its conductivity ability is very high.
• The chemical equation involved in the reaction is as follows:

$HCl+H_2O\rightarrow Cl^-+[H_3O]^+$

• On the other hand in the case of weak acid such as acetic acid, the rate of its dissociation in water is very low.
• It gets only partially dissociated and the reverse reaction occurs due to which the product yields reactant again. Thus its conductivity ability is very less.

• The chemical equation involved in the reaction is as follows:

$\mathrm{CH}_{3} \mathrm{COOH}+\mathrm{H}_{2} \mathrm{O} \leftrightarrow \mathrm{CH}_{3} \mathrm{COO}^{-}+\mathrm{H}_{3} \mathrm{O}^{+}$

Learn more about such concept

The molar conductivity of acetic acid at infinite dilution is 387 ohm-1 cm2 / mol. At the same temperature, but at a concentration of 1 mole in 1000 litres, it is 55 ohm-1 cm2 / mol. what is the percentage dissociation of acetic acid?

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