Common Ion Effect and Solubility of Electrolytes Quiz

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What effect does the addition of NaCl have on the solubility of AgCl?

Increases the solubility of AgCl
Has no effect on the solubility of AgCl
Decreases the solubility of AgCl
Can precipitate some of the AgCl (correct)

Apart from increasing temperature, how can a pharmacist increase the solubility of slightly soluble electrolytes?

Decreasing the pH of the solution
Adding substances that increase both ions' concentrations
Increasing the pressure of the solution
Adding substances that decrease one of the ions' concentrations (correct)

How does complex formation with substances like sodium citrate affect the solubility of iron compounds?

No effect on the solubility of iron compounds
Causes immediate precipitation of iron compounds
Increases the solubility of iron compounds (correct)
Decreases the solubility of iron compounds

How does the pH influence the solubility of weak electrolytes?

Decreases the solubility (B) Signup and view all the answers

What happens to the solubility of weakly acidic drugs when the pH of the solution is reduced?

Solubility decreases due to ionization (A) Signup and view all the answers

How does common ion effect influence the solubility of electrolytes?

Decreases the solubility of electrolytes (A) Signup and view all the answers

What happens to the solubility of sodium sulfate as the temperature increases up to 32°C?

Increases (B) Signup and view all the answers

Which process describes the solubility of slightly soluble electrolytes using a special constant, Ksp?

Complex formation in solubility (B) Signup and view all the answers

What effect does the addition of a common ion have on the equilibrium of silver chloride solution?

Decreases solubility (C) Signup and view all the answers

Under what conditions does the solubility of strong electrolytes like NaCl change with temperature?

Solubility remains constant with temperature changes (C) Signup and view all the answers

What happens to the solubility of calcium acetate and calcium hydroxide as temperature rises?

Decreases (D) Signup and view all the answers

What does a plot of solubility versus temperature help describe for a given system?

Endothermic vs exothermic processes (B) Signup and view all the answers

What does the Henderson-Hasselbalch equation for poorly-soluble weakly basic drugs represent?

The relationship between pH, pKa, and total solubility (B) Signup and view all the answers

What factor influences the precipitation of weakly basic drugs at high pH values?

Increasing pH (B) Signup and view all the answers

In the context of weakly basic drugs, what happens as the pH is lowered below 9.3?

The drug precipitates from solution (D) Signup and view all the answers

Which parameter determines the solubility of a compound at a given pH?

pKa (B) Signup and view all the answers

What is the role of the solute's molecular structure in determining its solubility?

Directly impacts its interaction with the solvent molecules (B) Signup and view all the answers

Which equation can be used to calculate the change in solubility with respect to pH for poorly-soluble weakly acidic drugs?

$pH = pKa + \log[(S - So)/So]$ (D) Signup and view all the answers