Chemistry · 2021
JEE Main · 16 March 2021, Shift 2 · Q57
A 5.0 m mol dm^-3 aqueous solution of KCl has a conductance of 0.55 mS when measured in a cell of cell constant 1.3 cm^-1. The molar conductivity of…
A $\displaystyle 5.0 \mathrm{~m} \mathrm{~mol} \mathrm{dm}{ }^{-3}$ aqueous solution of KCl has a conductance of $\displaystyle 0.55$ mS when measured in a cell of cell constant $\displaystyle 1.3 \mathrm{~cm}^{-1}$. The molar conductivity of this solution is \_\_\_\_ $\displaystyle \mathrm{mSm}^2 \mathrm{~mol}^{-1}$. (Round off to the Nearest Integer).
Official answer
14
More from Electrochemistry
- The conductivity of a weak acid HA of concentration 0.001 mol L^-1 is 2.0 × 10^-5 Scm^-1. If Λ_m^°(HA)=190 Scm^2 mol^-1, the ionization constant…2021
- The E^° (volt) values are: Al^3+ / Al,-1.66, Sc^3+ / Sc,-2.08, Fe^3+ / Fe^2+, +0.77, Hg_2^2+ / Hg,+0.79. Arrangement of cations, Al^3+, Sc^3+, Fe^3+…2022
- In which of the following half cells, electrochemical reaction is pH dependent?2022
- At 298 K, a 1 litre solution containing 10 mmol of Cr_2 O_7^2- and 100 mmol of Cr^3+ shows a pH of 3.0. Given: Cr_2 O_7^2- → Cr^3+; E^°=1.330 V and…2023
- The product, which is not obtained during the electrolysis of brine solution is2023
- The solubility product of a sparingly soluble salt A_2 X_3 is 1.1 × 10^-23. If specific conductance of the solution is 3 × 10^-5 S m^-1, the limiting…2022
- The Gibbs energy change (in J) for the given reaction at [Cu^2+]=[Sn^2+]=1 M and 298 K is: Cu( s)+Sn^2+(aq.) → Cu^2+(aq.)+Sn( s); (E_Sn^2+ ∣…2020
- Resistance of a conductivity cell (cell constant 129 m^-1 ) filled with 74.5 ppm solution of KCl is 100 Ω (labelled as solution 1). When the same…2022
JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.