Electrolytic Conductance of Acids, Bases, and Salts
Chemistry ⇒ Acids, Bases, and Salts
Electrolytic Conductance of Acids, Bases, and Salts starts at 10 and continues till grade 12.
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See sample questions for grade 12
Define specific conductance (κ).
Describe how you would experimentally determine the molar conductance of a weak acid at a given concentration.
Describe the effect of temperature on the electrolytic conductance of an aqueous solution.
Explain the difference between specific conductance and molar conductance.
Explain why the conductance of a salt solution is higher than that of pure water.
Explain why the conductance of a solution increases with dilution.
Explain why the conductance of pure water is very low.
A solution of NaCl and KCl has a total molar conductance of 250 S cm² mol⁻¹ at infinite dilution. If Λm°(NaCl) = 126.4 S cm² mol⁻¹ and Λm°(KCl) = 149.9 S cm² mol⁻¹, what is the ratio of NaCl to KCl in the mixture?
The conductance of a solution depends on which of the following factors?
(1) Nature of electrolyte
(2) Concentration of solution
(3) Temperature
(4) All of the above
Which of the following acids will have the lowest molar conductance at the same concentration?
(1) HCl
(2) HNO₃
(3) CH₃COOH
(4) H₂SO₄
Which of the following bases will have the highest conductance at 0.1 M concentration?
(1) NaOH
(2) NH₄OH
(3) Ca(OH)₂
(4) Mg(OH)₂
Which of the following is NOT a factor affecting electrolytic conductance?
(1) Temperature
(2) Pressure
(3) Nature of electrolyte
(4) Concentration
Fill in the blank: The conductance of a solution is measured using a _______ cell.
Fill in the blank: The molar conductance of a solution is given by the formula Λm = _______.
Fill in the blank: The SI unit of specific conductance is _______.
Fill in the blank: The specific conductance (κ) of a solution _______ with dilution.
True or False: Strong acids and strong bases are completely ionized in aqueous solution, resulting in high electrolytic conductance.
True or False: The conductance of a solution is affected by the size and charge of the ions present.
True or False: The conductance of a solution is always higher than that of the pure solvent.
True or False: The conductance of a solution is directly proportional to the number of ions present.
