Buffers

[cs_content][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]The Acidic Environment‎ > ‎4. Acid/Base Definitions‎ >

Qualitatively describe the effect of buffers with reference to a specific example in a natural system[/cs_text][/cs_column][/cs_row][/cs_section][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]

  • Buffer system: A solution that controls its acidity, such that if an acid or a base is added, there is a minimal change in pH.
  • A buffer solution is generally a mixture of a weak acid and its conjugate base.
  • An example of a buffer system that exists in nature is a solution of carbonic acid (which forms from the dissolution of carbon dioxide from the air) and hydrogen carbonate (which forms from the dissolution of salts from rocks):
  • This system exists in freshwater lakes and rivers.

Structure of carbonic acid
Hydrogen carbonate forms from
the dissolution of salt from rocks

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