Question:
How long should aqueous \(\text{NaCl}\) be electrolysed by passing 100 ampere current, so that 0.5 mol chlorine is released at anode?
How long should aqueous \(\text{NaCl}\) be electrolysed by passing 100 ampere current, so that 0.5 mol chlorine is released at anode?
Show Hint
Use \(Q = It\) and Faraday constant \(= 96500 C\).
Updated On: Apr 26, 2026
- 96500 seconds
- 9650 seconds
- 965 seconds
- 96.5 seconds
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Concept:
\[ Q = n F z \] Step 1: Reaction. \[ 2Cl^- \rightarrow Cl_2 + 2e^- \] 1 mole \(Cl_2\) needs 2 Faraday.
Step 2: Calculate charge. \[ 0.5 \text{ mol } Cl_2 \Rightarrow 1F = 96500 C \]
Step 3: Time. \[ t = \frac{Q}{I} = \frac{96500}{100} = 965 \text{ sec} \]
Step 4: Conclusion. Correct answer = 965 sec â closest (A).
\[ Q = n F z \] Step 1: Reaction. \[ 2Cl^- \rightarrow Cl_2 + 2e^- \] 1 mole \(Cl_2\) needs 2 Faraday.
Step 2: Calculate charge. \[ 0.5 \text{ mol } Cl_2 \Rightarrow 1F = 96500 C \]
Step 3: Time. \[ t = \frac{Q}{I} = \frac{96500}{100} = 965 \text{ sec} \]
Step 4: Conclusion. Correct answer = 965 sec â closest (A).
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Coordination chemistry Questions
- Which is the weakest ligand?
- What is IUPAC name of \([ \text{CoCl}_2 (\text{en})_2 ]^+ \)?
- What is the quantity of heat evolved when 6 g carbon combines with sulfur to form CS₂ according to the reaction: \[ \text{C} + \text{S}_2 \rightarrow \text{CS}_2, \Delta H = -92 \, \text{KJ/mol} \]
- The molecular mass of an organic monobasic acid is 129 and the value of \( n \) is 2, what is empirical formula mass of compound?
- Relation between \( \Delta H \) and \( \Delta U \) for the reaction \[ \text{2SO}_3 (g) \rightarrow \text{2SO}_2 (g) + \text{O}_2 (g) \] is
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions