Electrolyte Compounds and Salt Crystals Quiz

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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. (correct)

When the solution reaches a high concentration of ions.

When the solution completely dissociates into ions.

When the solute concentration keeps increasing over time.

Which concentration unit is commonly expressed in grams of solute per liter of solution?

Mass percent (correct)

Molarity

Molality

Parts per million

What characteristic makes vinegar a weak electrolyte?

High concentration of ions in solution.

Formation of neutral molecules in solution. (correct)

Ability to conduct electricity well.

Strong dissociation into ions.

How is molarity defined?

Moles of solute per liters of solution. Signup and view all the answers

What is the advantage of using molality as a concentration unit?

It directly quantifies the masses of solute and solvent. Signup and view all the answers

How can the molar concentration be determined from grams per liter?

By dividing by the molecular weight of the substance. Signup and view all the answers

What does one mole represent in terms of particles?

$6.02 \times 10^{23}$ particles Signup and view all the answers

What is determined by dividing grams per liter by the molecular weight of a substance?

$\text{molarity}$ Signup and view all the answers

What effect does increasing temperature have on molality?

No effect on molality Signup and view all the answers

What is molality defined as?

Moles of solute per kilogram of solvent Signup and view all the answers

Which statement best describes the equilibrium state of a solution?

Concentrations of neutral molecules and ions remain constant with time. Signup and view all the answers

What makes an electrolyte solution electrically conductive?

High concentration of ions Signup and view all the answers

How does adding more salt affect the electrical conductivity of a solution?

Increases electrical conductivity Signup and view all the answers

What is the advantage of using molarity as a concentration unit over mass-based units?

It directly quantifies the masses of solute and solvent. Signup and view all the answers

How are concentration units based on moles or molar units commonly expressed?

Molarity Signup and view all the answers

What does one mole represent in terms of atoms or molecules?

A fixed number of particles Signup and view all the answers

How does molality differ from molarity in measuring concentration?

Molality accounts for thermal expansion. Signup and view all the answers

What characteristic distinguishes strong electrolytes like sodium chloride from weak electrolytes like vinegar?

High equilibrium concentration of ions Signup and view all the answers

How does the presence of ions affect the electrical conductivity of a solution?

Increases the electrical conductivity Signup and view all the answers

Why is molality considered a useful concentration unit regardless of temperature changes?

It remains consistent with changes in temperature. Signup and view all the answers