Solutions and Acids–Bases flashcards

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What is mass concentration in g/L?Concentration: Grams of solute per liter of final solution.
What is mass percent?Concentration: Solute mass divided by total solution mass times 100%.
What is molarity?Concentration: Moles of solute per liter of solution.
Does concentrated mean saturated?Concentration: No; these describe different properties.
What remains constant in a simple dilution?Concentration: Moles of solute.
What does doubling final volume do at fixed solute amount?Concentration: Halves molarity.
What is solubility?Solubility: Equilibrium amount that can dissolve under specified conditions.
What is saturated?Solubility: At the equilibrium solubility limit.
What is unsaturated?Solubility: Below the solubility limit.
What is supersaturated?Solubility: Above the usual equilibrium amount, often unstable.
What is a saturated solution?Solubility: A solution at the equilibrium solubility limit under stated conditions.
How is dissolving rate different from solubility?Solubility: Rate is speed; solubility is the equilibrium amount.
How does gas partial pressure often affect gas solubility?Solubility: Higher partial pressure increases it at fixed temperature.
What does pH summarize?pH and Neutralization: Hydronium activity in an aqueous system.
What is neutral pH near 25 °C?pH and Neutralization: Approximately 7.
What does one pH unit represent?pH and Neutralization: About a tenfold hydronium change in the idealized scale.
What is an acid base indicator?pH and Neutralization: A substance with a pH dependent color range.
What does lower pH indicate in this model?pH and Neutralization: Higher hydrogen-ion concentration.
What is an equivalence point?pH and Neutralization: The balanced stoichiometric amounts have reacted.
Is every equivalence point at pH 7?pH and Neutralization: No; it depends on the acid/base system.