Calcium ions have λ° = 119.0 S cm²/mol. An anion A⁻ has…

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

Calcium ions have $\lambda^\circ = 119.0\ \text{S cm}^2/\text{mol}$ . An anion $\text{A}^-$ has $\lambda^\circ = 62.5\ \text{S cm}^2/\text{mol}$ . Which value is $\Lambda_m^\circ$ for the compound $\text{CaA}_2$ ?

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← A chemist dissolves a salt to make 0.0300 mol/L and measures κ = 6.3 × 10⁻³ S/cm. Which value is the molar conductivity of the salt?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? →

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