20 Questions
What is the equilibrium state for a solution?
When the conversion rate of neutral molecules into ions equals the rate of recombination of ions into neutral molecules.
Which concentration unit is commonly expressed in grams of solute per liter of solution?
Mass percent
What characteristic makes vinegar a weak electrolyte?
Formation of neutral molecules in solution.
How is molarity defined?
Moles of solute per liters of solution.
What is the advantage of using molality as a concentration unit?
It directly quantifies the masses of solute and solvent.
How can the molar concentration be determined from grams per liter?
By dividing by the molecular weight of the substance.
What does one mole represent in terms of particles?
$6.02 \times 10^{23}$ particles
What is determined by dividing grams per liter by the molecular weight of a substance?
$\text{molarity}$
What effect does increasing temperature have on molality?
No effect on molality
What is molality defined as?
Moles of solute per kilogram of solvent
Which statement best describes the equilibrium state of a solution?
Concentrations of neutral molecules and ions remain constant with time.
What makes an electrolyte solution electrically conductive?
High concentration of ions
How does adding more salt affect the electrical conductivity of a solution?
Increases electrical conductivity
What is the advantage of using molarity as a concentration unit over mass-based units?
It directly quantifies the masses of solute and solvent.
How are concentration units based on moles or molar units commonly expressed?
Molarity
What does one mole represent in terms of atoms or molecules?
A fixed number of particles
How does molality differ from molarity in measuring concentration?
Molality accounts for thermal expansion.
What characteristic distinguishes strong electrolytes like sodium chloride from weak electrolytes like vinegar?
High equilibrium concentration of ions
How does the presence of ions affect the electrical conductivity of a solution?
Increases the electrical conductivity
Why is molality considered a useful concentration unit regardless of temperature changes?
It remains consistent with changes in temperature.
Test your knowledge on electrolyte compounds like sodium chloride and their arrangement of charged particles in crystal structures. Learn about the properties of electrolytes and their behavior when dissolved in water.
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