Chemistry Question 74 – JEE-MAIN 2026

At 298 K, the molar conductivity of $x\mathrm{\%}$ (w/w) MX solution (aqueous) is $123.5{\text{ S cm}}^2{\text{ mol}}^{-1}$. The conductance of same solution is $1.9\times {10}^{-3}\text{ S}$. The value of $x$ is _______ $\times {10}^{-2}$. (Given: cell constant $=1.3{\text{ cm}}^{-1}$; molar mass of MX is $75{\text{ g mol}}^{-1}$, density of aqueous solution of MX at 298 K is $1.0{\text{ g mL}}^{-1}$)