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Answer the following.
Yash measures the conductivity of two different solutions of 1M Ethanoic acid and 1M HCl each at …
Yash measures the conductivity of two different solutions of 1M Ethanoic acid and 1M HCl each at $25^\circ\text{C}$.
(a)[1.0]
Will he observe the same conductivity value for both the solutions? Justify your answer.
(b)[1.0]
What will be the effect on conductivities when he keeps on diluting the solutions? Explain with the help of a graph.
Answer
Answer (a)
Official answer keyNo, the conductivity of 1 M HCl will be greater than 1M ethanoic acid. As it is a strong acid, complete ionization will occur so the number of ions will be more.
Answer (b)
Official answer keyGraph of molar conductivity ($\lambda_m$, y-axis) against $\sqrt{C}$ (x-axis): HCl is a straight line rising slowly as the solution is diluted; $\mathrm{CH_3COOH}$ is a curve that rises very steeply at low concentration (high dilution).
From ISC 2025 Practice Chemistry, question 50.