Saturated Solutions in Chemistry
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Questions and Answers

What does molarity measure?

  • Volume of the solvent in a solution
  • Amount of a substance dissolved in a solution (correct)
  • Mass of the solvent in a solution
  • Density of the solvent in a solution
  • In a solution, which component is the solute?

  • The substance that is dissolved (correct)
  • The substance dissolved in another substance
  • The substance that affects the color of the solution
  • The substance that acts as the solvent
  • What is the unit of measurement for solute concentration?

  • Moles of solute per liter of solution (correct)
  • Grams of solvent per liter of solution
  • Moles of solvent per gram of solution
  • Liters of solute per gram of solution
  • Why do chemists use molar units when working with chemical reactions?

    <p>To standardize the basis for quantifying the number of particles in a reaction</p> Signup and view all the answers

    What does Avogadro's number represent?

    <p>The number of atoms in a mole</p> Signup and view all the answers

    What happens to the dissolution rate of gases when the pressure is increased?

    <p>Increases</p> Signup and view all the answers

    Which of the following substances is considered an electrolyte?

    <p>Sodium chloride</p> Signup and view all the answers

    What distinguishes strong electrolytes from weak electrolytes?

    <p>Strong electrolytes completely dissociate into ions</p> Signup and view all the answers

    In which type of solution does the solute amount fall below the solubility curve?

    <p>Unsaturated solution</p> Signup and view all the answers

    What factor can influence the ease of the dissolution of a solute into a solvent?

    <p>Particle size</p> Signup and view all the answers

    What is the percent yield formula?

    <p>Actual yield / Theoretical yield</p> Signup and view all the answers

    How is the empirical formula of a compound determined using percent composition?

    <p>By calculating the ratio of moles of individual elements</p> Signup and view all the answers

    What is an anhydrate?

    <p>A hydrate where water has been removed.</p> Signup and view all the answers

    Why does dissolution only occur when the solvent and solute have similar polarities?

    <p>&quot;Like dissolves like&quot; principle.</p> Signup and view all the answers

    How does an increase in temperature affect the rate of dissolution?

    <p>It increases the rate of dissolution due to higher kinetic energy.</p> Signup and view all the answers

    What type of compounds are salts composed of?

    <p>Ionic compounds</p> Signup and view all the answers

    How is molarity (M) defined?

    <p>Moles of solute per liters of solution</p> Signup and view all the answers

    Which property describes the tendency of solvent molecules to escape into the gas phase in a solution?

    <p>Vapor pressure</p> Signup and view all the answers

    What is the purpose of a salt solubility table in predicting reactions?

    <p>To predict if a precipitate will form when two solutions are mixed</p> Signup and view all the answers

    How is molality (m) expressed?

    <p>Moles of solute per kilogram of solvent</p> Signup and view all the answers

    What are the four variables needed to define the physical state of a gas?

    <p>Temperature, pressure, volume, moles</p> Signup and view all the answers

    At standard temperature and pressure (STP), how many liters does one mole of any gas occupy?

    <p>22.4 liters</p> Signup and view all the answers

    What determines the amount of excess reactant that will be consumed in a chemical reaction?

    <p>The limiting reactant</p> Signup and view all the answers

    How can you determine the product generated in a chemical reaction?

    <p>By equating the moles of the limiting reactant and product</p> Signup and view all the answers

    What does the molar mass represent in chemistry?

    <p>The grams of the atom per one mole of that atom</p> Signup and view all the answers

    What is the key component of an Arrhenius acid when dissolved in water?

    <p>Hydronium ions</p> Signup and view all the answers

    Which of the following is a property of Arrhenius bases?

    <p>Feels slippery to the touch</p> Signup and view all the answers

    What must be present for a substance to be classified as an Arrhenius acid?

    <p>Hydrogen ions</p> Signup and view all the answers

    In a decomposition reaction involving a binary compound, what are the expected products?

    <p>Elements in the reactant</p> Signup and view all the answers

    What does a saturated solution contain?

    <p>Maximum concentration of solute</p> Signup and view all the answers

    According to Lewis, an acid is a substance that _______________.

    <p>accepts an electron pair to form a covalent bond</p> Signup and view all the answers

    Which scientist's definition of acids and bases does not account for substances that do not contain hydrogen?

    <p>Bronsted and Lowry</p> Signup and view all the answers

    What is the main limitation of the first scientist's definition of acids in the text?

    <p>It requires the substance to be dissolved in water</p> Signup and view all the answers

    According to Bronsted and Lowry, what characterizes an acid?

    <p>Donates a proton</p> Signup and view all the answers

    What type of substances do Bronsted and Lowry's definitions not consider?

    <p>Substances without hydrogen</p> Signup and view all the answers

    What makes Lewis' definition unique compared to the other definitions mentioned?

    <p>Accounts for substances without hydrogen</p> Signup and view all the answers

    Which scientist's definition allows for a broader range of substances to be classified as acids?

    <p>Lewis</p> Signup and view all the answers

    What is a key limitation of Bronsted and Lowry's definitions of acids and bases?

    <p>Doesn't consider substances without hydrogen</p> Signup and view all the answers

    What distinguishes Lewis' definition from the other scientists' definitions?

    <p>Includes substances without hydrogen</p> Signup and view all the answers

    What aspect of defining acids does Lewis focus on compared to Bronsted and Lowry?

    <p>The role of electrons in forming covalent bonds</p> Signup and view all the answers

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