Chemical Concepts Quiz

Strong acids completely dissociate in solution, releasing a large number of protons (H+), while weak acids only ionize slightly, releasing a low number of protons (H+). An example of a strong acid is HCl, and an example of a weak acid is acetic acid (CH3COOH).

Alkalies are substances that give hydroxyl ions (OH-) in solution. A strong alkali completely dissociates in solution, such as NaOH and KOH, while a weak alkali only ionizes slightly, such as ammonium hydroxide (NH4OH).

Amphoteric substances are those that can act as both an acid (proton donor) and a base (proton acceptor). Examples include water (H2O) and amino acids.

<p>pH represents the concentration of hydrogen ions in a solution and is calculated as the negative log$_{10}$ of the hydrogen ion concentration expressed in moles per liter (mol/L). The pH of pure water is 7.</p> Signup and view all the answers

<p>A pH of 7 indicates a neutral solution, where the concentration of hydrogen ions is equal to the concentration of hydroxide ions (H+ = OH-).</p> Signup and view all the answers