driving cars lowers the ph of the oceans by ________. a. releasing co₂ that dissolves and forms acid in the…

driving cars lowers the ph of the oceans by ________. a. releasing co₂ that dissolves and forms acid in the oceans b. releasing pollutants that lead to smog c. releasing co that dissolves and forms acid in the oceans d. releasing pollutants that lead to acid rain please select the best answer from the choices provided

driving cars lowers the ph of the oceans by ________. a. releasing co₂ that dissolves and forms acid in the oceans b. releasing pollutants that lead to smog c. releasing co that dissolves and forms acid in the oceans d. releasing pollutants that lead to acid rain please select the best answer from the choices provided

Answer

Brief Explanations:

  • Option a: When cars release (CO_2), it dissolves in the ocean. The reaction (CO_2 + H_2O\rightleftharpoons H_2CO_3) (carbonic acid formation) occurs. As carbonic acid can dissociate ((H_2CO_3\rightleftharpoons H^+ + HCO_3^-)), it increases the hydrogen ion ((H^+)) concentration in the ocean. Since (pH =-\log[H^+]), an increase in (H^+) concentration lowers the pH.
  • Option b: Pollutants leading to smog (e.g., particulate matter, some volatile organic compounds) do not directly affect ocean pH. Smog is more related to air - quality issues near the Earth's surface and does not have a direct chemical pathway to lower ocean pH.
  • Option c: (CO) (carbon monoxide) is a relatively unreactive gas in the context of ocean chemistry. It does not dissolve in water to form an acid that would significantly affect ocean pH.
  • Option d: Acid rain is formed when pollutants (e.g., (SO_2), (NO_x)) react with water in the atmosphere. While acid rain can affect terrestrial and some freshwater ecosystems, it is not the main mechanism by which driving cars lowers ocean pH. The primary gas from cars that affects ocean pH is (CO_2).

Answer:

A. releasing (CO_2) that dissolves and forms acid in the oceans