✓ Board-verified
Chemistry · 2022 · 2 marks
CBSE 2022 · Region 4 · Set 1 · Q2
In a plot of Λ_m against the square root of concentration ( C^1 / 2) for strong and weak electrolyte, the value of limiting molar conductivity of a…
In a plot of $\displaystyle \mathbf{\Lambda}_{\mathrm{m}}$ against the square root of concentration $\displaystyle \left(\mathrm{C}^{1 / 2}\right)$ for strong and weak electrolyte, the value of limiting molar conductivity of a weak electrolyte cannot be obtained graphically. Suggest a way to obtain this value. Also state the related law, if any.
Marking-scheme solution
Limiting molar conductivity for weak electrolyte can be obtained by using Kohlrausch law.It states that limiting molar conductivity of an electrolyte is the sum of conductivity of constituent ions.
All Electrochemistry questions2022 question paperNCERT solutions: ElectrochemistryPractice Electrochemistry →
More from Electrochemistry
- Kohlrausch gave the following relation for strong electrolytes: Λ_m=Λ_m^°-A √C Which of the following equality holds true?2025 · asked 2×
- Assertion: E_Cu^° 2+/ Cu is positive (+0.34 V). Reason (R): Copper has high Δ_a H^° and low Δ_hyd H^°.2023 · asked 2×
- During the electrolysis of aqueous NaCl, the cathodic reaction is:2024
- Calculate the standard Gibbs energy (Δ_r G^°) of the following reaction at 25 °C: 3 + 2 Au( s)+Ca^2+(1 M) → Au^3+(1 M)+Ca( s); E_Au^3+ / Au^°=+1.5 V,…2025
- (i) What should be the signs (positive/negative) for E^°_Cell and Δ G^° for a spontaneous redox reaction occurring under standard conditions? (ii)…2023
- Batteries and fuel cells are very useful forms of galvanic cell. Any battery or cell that we use as a source of electrical energy is basically a…2024
- (i) Why on dilution the Λ_m of CH_3 COOH increases very fast, while that of CH_3 COONa increases gradually? (ii) What happens if external potential…2022
- During electrolysis of dilute H_2 SO_4, using platinum electrodes, the gas evolved at the anode is:2025
CBSE Class 12 Chemistry past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.