A weak monobasic acid has c = 0.0140 mol/L, Λm = 25.2 S…

ChemistryHardHigh School (11–12)Electrochemistry › Conductance, Electrolysis and Batteries A-Level AP IB

A weak monobasic acid has $c = 0.0140\ \text{mol/L}$ , $\Lambda_m = 25.2\ \text{S cm}^2/\text{mol}$ and $\Lambda_m^\circ = 360\ \text{S cm}^2/\text{mol}$ . Keeping the full expression, what is $K_a$ ?

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← A student has κ = 0.77 S/m and c = 0.035 mol/L. She writes Λm = 0.77 ÷ 0.035 = 22 and gives the unit as S cm²/mol. What is the correct value, and what went wrong?Which statement about an electrolytic cell is correct? →

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