alleryStart learning →True or false: conductivity on dilution
Exercise and reference answers
- Questions
- Statement is true
- Yes
- Statement
- Conductivity decreases as concentration decreases.
- Statement is true
- Yes
- Statement
- Molar conductivity increases as concentration decreases.
- Statement is true
- No
- Statement
- Both conductivity and molar conductivity fall on dilution.
- Statement is true
- Yes
- Statement
- Molar conductivity is defined as κ divided by concentration.
- Statement is true
- Yes
- Statement
- Conductivity depends on the solvent and the temperature.
Explanation
This is the counterintuitive one.
Conductivity falls as you dilute because there are fewer ions per unit volume, while molar conductivity rises because each mole of electrolyte dissociates more completely.
Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.
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