Acids, Bases, and Solutions Quiz
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Questions and Answers

Which of the following correctly defines pH?

  • pH measures the number of moles of a substance.
  • pH is defined as the negative logarithm of the concentration of protons in a solution. (correct)
  • pH is a measure of the concentration of hydroxide ions in a solution.
  • pH is the amount of solute present per liter of solution.

In terms of pH, what is the proton concentration in a solution with a pH of 4?

  • 1.0 x 10^-7 M
  • 1.0 x 10^4 M
  • 1.0 x 10^-4 M (correct)
  • 1.0 x 10^7 M

How does adding an acid to a solution affect its proton concentration?

  • Changes the pH but not the proton concentration
  • Does not affect the proton concentration
  • Lowers the proton concentration
  • Increases the proton concentration (correct)

What is molarity a measure of?

<p>The moles of solute per liter of solution (A)</p> Signup and view all the answers

When a solution has a pH greater than 7, what can be inferred about its proton concentration?

<p>Proton concentration is less than 1.0 x 10^-7 M (A)</p> Signup and view all the answers

Which type of energy is associated with stored energy?

<p>Potential energy (B)</p> Signup and view all the answers

What property of water is responsible for the high specific heat of the molecule?

<p>Formation of hydrogen bonds between water molecules (A)</p> Signup and view all the answers

Which process requires a large amount of energy due to the need to break hydrogen bonds in water?

<p>Boiling water (C)</p> Signup and view all the answers

Why does water have a higher heat of vaporization compared to most liquids at room temperature?

<p>Strong hydrogen bonding between water molecules (B)</p> Signup and view all the answers

How does the high specific heat of water affect living organisms?

<p>Stabilizes internal temperatures in organisms (B)</p> Signup and view all the answers

Which type of substances are classified as bases based on their behavior in water?

<p>Substances that acquire protons (A)</p> Signup and view all the answers

What would be the effect on pH when a base is added to water?

<p>Increase in pH (B)</p> Signup and view all the answers

Which element mentioned in the text has the highest electronegativity?

<p>Oxygen (C)</p> Signup and view all the answers

Which type of bond involves the complete transfer of electrons from one atom to another?

<p>Ionic bond (D)</p> Signup and view all the answers

What type of ion is formed when an atom gains an electron?

<p>Anion (C)</p> Signup and view all the answers

Which molecule has a tetrahedral structure?

<p>Methane (CH4) (A)</p> Signup and view all the answers

What is the net charge of a chloride ion?

<p>-1 (C)</p> Signup and view all the answers

Which element mentioned in the text is critical for life mainly due to its role as an excellent solvent?

<p>Oxygen (D)</p> Signup and view all the answers

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