AP BIOLOGY

Detailed explanation-1: -An acid is a substance or compound that releases hydrogen ions (H+) when in solution. In a strong acid, such as hydrochloric acid (HCl), all hydrogen ions (H+), and chloride ions (Cl-) dissociate (separate) when placed in water and these ions are no longer held together by ionic bonding.

Detailed explanation-2: -Acids are chemical compounds that release hydrogen ions (H+) when placed in water. For example, when hydrogen chloride is placed in water, it releases its hydrogen ions and the solution becomes hydrochloric acid.

Detailed explanation-3: -Acids are substances that when dissolved in water release hydrogen ions, H+(aq). Bases are substances that react with and neutralise acids, producing water. When dissolved, bases release hydroxide ions, OH-(aq) into solution.

Detailed explanation-4: -An acid produces free H+ ions in aqueous solution.

Detailed explanation-5: -Because these compounds contain hydrogen in a-1 oxidation state, they dissociate in water to give the H-(or hydride) ion. The H-ion, with its pair of valence electrons, can abstract an H+ ion from a water molecule.