n and leaving a
-at equilibrium water is not dissociated
-at equilibrium in pure water at 25oC [H+] = [OH-]
-acids are substances that increase the relative [H+] and remove OH-
because it tends to combine with H+ to form water
- if [H+] * [OH-] , it is acidic and has a pH between 0 and 7
-bases are substances that reduce the relative [H+] in a solution
-if [H+] * [OH-] , it is basic and has a pH greater than 7
-buffers are important in the body to keep the pH range between 6 and 8
-pH of blood is between 7.34 and 7.44
-mustn’t shift below 7.2 or acidosis will occur
-some body zones may have a pH as low as 0.5 or as high as 10
-buffers minimize sudden changes and are a combo of hydrogen donors and
-ions are accepted when in excess and donated when in short supply
-in biological systems an example is the bicarbonate buffer
-in response to a rise in pH, the carbonic acid dissociates to form a
-if there is a drop, it is reversed (pH up = to right, pH down = to left)
-equilibrium is established but it is always moving to the left or the right
-other body buffers include protein molecules which donate and accept
-most of the rest of organisms is made up of carbon based compounds like
carbs, lipids, proteins, nucleic acids
-carbon compounds are known as organic
-vitalism is the belief in a life force outside the control of chemical laws
-this has been disproved as water, ammonia, hydrogen and methane have
been combined in a lab to form organic substances
-C+H+N = amino acids, urea, proteins, lipids
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