Question:
The pair of electrolytes that posses same value for the constant (A) in the Debye - Huckel - Onsagar equation, $\lambda_m = \lambda^0_m - A\sqrt{C}$ is
The pair of electrolytes that posses same value for the constant (A) in the Debye - Huckel - Onsagar equation, $\lambda_m = \lambda^0_m - A\sqrt{C}$ is
Updated On: Aug 9, 2024
- $MgSO_4, NaSO_4$
- $NH_4Cl, NaBr$
- $NaBr, MgSO_4$
- $NaCl, CaCl_2$
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The Correct Option is B
Solution and Explanation
The value of the constant $A$ in the Debye $-$ Huckel -Onsager equation, $\lambda_{ m }=$ $\lambda_{m}^{0}-A \sqrt{C}$ depends on temperature, charges of the ions, the dielectric constant of the solvent and also the viscosity of the solvent. Here, since we are not given the solvent, we will assume that the solvent is the same for each case. Here, the deciding factor is the charge on the ions. Again, in $NH _{4} Cl$ and $NaBr$, the charges on the ions are the same. Hence the pair of electrolytes that will possess the same value for the constant (A) will be $NH _{4} Cl , NaBr$.
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Concepts Used:
Electrolysis
Electrolysis:
Electrolysis is the process by which an element is decomposed and undergoes some chemical change under the influence of any electric current. The first-ever electrolysis was executed out by Sir Humphrey Davey in the year 1808. Electrolysis can occur in both Galvanic cells and Electrolytic cells.
Applications of Electrolysis:
- Electrolytic cells are used for the production of Hydrogen and Oxygen gas from water.
- They are used for the large-scale production of pure metals like sodium, copper, magnesium, etc.
- They are used to extract Aluminium from Bauxite.
- Electrolytic cells are used for electroplating, a process by which a thin protective layer of one metal is formed over another metal, mostly for protection.
- Electrolysis is used for the electrorefining of non-ferrous metals.
Read More: Products of Electrolysis