Ostwald’s dilution law finds applicability in:
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Answer: D. Weak electrolytes
Explanation
Weak electrolytes dissociate only partially into ions when dissolved in aqueous solutions. Ostwald's dilution law applies the law of mass action mathematically to this partial dissociation equilibrium. Strong electrolytes dissociate completely, making equilibrium dilution laws inapplicable to their behavior. Electrolytes are substances that conduct electricity in solution by releasing mobile ions. Degree of ionization increases as weak electrolyte solutions become progressively more diluted. Constant values govern the dissociation equilibrium of weak acids and bases at specific temperatures.
Analytical chemistry uses dilution laws to calculate pH and ion concentrations in weak acid solutions. Biological buffers consist of weak electrolyte systems that resist drastic pH changes in cells. Electrochemistry calculations often require accounting for incomplete dissociation in weak electrolytes. Option A is incorrect because strong electrolytes dissociate completely, bypassing equilibrium equations. Option B is incorrect since strong electrolytes do not establish partial dissociation equilibria. Option C is incorrect because non-electrolytes fail to produce ions and conduct electricity.
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