Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
99 Percentile Qs Bank for JEE MainChemistryElectrochemistry

At 291   K , saturated solution of BaSO 4 was found to have a specific conductivity of 3 . 648 × 10 - 6 ohm - 1   cm - 1 and that of water being used is 1 . 25 × 10 - 6 ohm - 1   cm - 1 . If the ionic conductance's of Ba 2 + and SO 4 2 - are 110 and 136 . 6 ohm - 1   cm 2   mol - 1 respectively, the solubility of BaSO 4 at 291   K will be [Atomic masses of Ba - 137 , S - 32

Options

  1. A1 .435 × 10 − 3 gL − 1
  2. B2 .266 × 10 − 3 gL − 1
  3. C2 .843 × 10 − 3 gL − 1
  4. D1 .768 × 10 − 3 gL − 1

Correct answer

B. 2 .266 × 10 − 3 gL − 1

Step-by-step solution

According to Kohlrausch's law λ ° m BaSO 4   =   λ ° m Ba 2 + + λ ° m SO 4 2 - λ ° m BaSO 4     =   110 + 136 . 6 λ ° m BaSO 4     =     246 . 6   ohm - 1 cm - 1 Now, the solubility product of BaSO 4 can be determined by: K BaSO 4   =   K BaSO 4 solution - K water K BaSO 4   =   3 . 648 × 10 - 6 - 1 . 25 × 10 - 6 K BaSO 4   =   2 . 398 × 10 - 6   S   cm - 1 F

Practice Electrochemistry on Quantrex Academy →

More from Electrochemistry

At 300 K, the molar conductivities of the aqueous solutions of three salts at two different concentrations are given below: Salt Concentration (M) Molar conductivity (S cm ^2 mol ⁻ 2026Given at 298 K: E^ _ Fe²⁺/Fe = X Volt; E^ _ Fe³⁺/Fe = Y Volt. The E^ _ Fe³⁺/Fe²⁺ in Volt at 298 K is given by: 2026For a general redox reaction Anode : Red ₁ Ox ₁^ n₁^+ + n₁ e^- Cathode : Ox ₂ + n₂ e^- Red ₂^ n₂^- Which of the following statements is incorrect? 2026Consider the following data. Electrolyte ^ _m (S cm ^2 mol ⁻¹ ) BaCl ₂ x₁ H ₂ SO ₄ x₂ HCl x₃ BaSO ₄ is sparingly soluble in water. If the conductivity of the saturated BaSO ₄ solut 2026One half cell in a voltaic cell is constructed by dipping silver rod in AgNO₃ solution of unknown concentration, other half cell is Zn rod dipped in 1 molar solution of ZnSO₄ . A v 2026At 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 . (Gi 2026An electrochemical cell, consist of the following two redox couples, M^ x+ (aq)/M(s)[E_ red ^ =+0.15 V ] and Fe³⁺(aq)/Fe(s)[E_ red ^ =-0.036 V ] . The cell EMF (E_ cell ) is record 2026Consider the following two half-cell reactions along with the standard reduction potential given: CO₂ + 6H^+ + 6e^- CH₃ OH + H₂ O E°_ red = 0.02 V 1 2 O₂ + 2H^+ + 2e^- H₂ O E°_ red 2026 Full Electrochemistry list All 99 Percentile Qs Bank for JEE Main PYQs