JEE Main 2022 · 27 Jun · Shift 1 · Chemistry Q85

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ChemistryInteger+4 / -1Question 85 of 90

The limiting molar conductivities of NaI, $\mathrm{NaNO_3}$ and $\mathrm{AgNO_3}$ are 12.7, 12.0 and 13.3 mS m $^2$ mol $^{-1}$ , respectively (all at 25°C). The limiting molar conductivity of AgI at this temperature is ______ mS m $^2$ mol $^{-1}$ .

Your answer

Answer and worked solution

Official answer: 14

Kohlrausch. $\Lambda^\circ_{\rm AgI}=\Lambda^\circ_{\rm AgNO_3}+\Lambda^\circ_{\rm NaI}-\Lambda^\circ_{\rm NaNO_3}=13.3+12.7-12.0=14.0$ mS m $^2$ mol $^{-1}$ .

Answer: 14

Topics:Conductance and Kohlrausch's law

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JEE Main 2022 · 27 Jun · Shift 1, Chemistry question 85