At 298 K, the molar conductivity of x% (w/w) MX solution (aqueous) is 123.5 S cm ² mol ⁻¹. The conductance of same solution is 1.9×10⁻³ S. The value of x is _ _ _ ×10⁻². (Given: cell constant = 1.3 cm ⁻¹; molar mass of MX is 75 g mol ⁻¹, density of aqueous solution of MX at 298 K is 1.0 g mL ⁻¹)

Redox Reactions and Electrochemistry: JEE Main 2026 Chemistry question

JEE Main 2026 · 5 Apr, Evening shift · Q74

JEE Main 20265 Apr, Evening shiftChemistryMediumRedox Reactions and Electrochemistry138× since 2002

At 298 K, the molar conductivity of

x

% (w/w) MX solution (aqueous) is 123.5 S cm

^2

mol

^{-1}

. The conductance of same solution is

1.9\times10^{-3}

S. The value of

x

is ______

\times10^{-2}

. (Given: cell constant = 1.3 cm

^{-1}

; molar mass of MX is 75 g mol

^{-1}

, density of aqueous solution of MX at 298 K is 1.0 g mL

^{-1}

)

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2026 Redox Reactions and Electrochemistry Question with Solution (5 Apr Evening shift, Q74) | JEE Arc