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pH = 6.1 + log [HCO3-]/[H2CO3] What is the pH if the ratio of bicarbonate to...

pH = 6.1 + log [HCO3-]/[H2CO3]
What is the pH if the ratio of bicarbonate to carbonic acid is 25/1?

pH = 6.1 + log [HCO3-]/[H2CO3]

What is the pH if the ratio of bicarbonate to carbonic acid is 20/1.5?

Science   Anatomy-And-Physiology   
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Homework Answers

Answer #1

The arbonic acid-bicarbonate buffer is the most important buffer for maintaining acid-base balance in the blood.

Generally the equation for the pH of the buffer is pH=pK+og [HCO3-]/[H2CO3].

under normal conditions the pK=6.1,so the equation becomes

pH = 6.1 + log [HCO3-]/[H2CO3].

so the above questions can be solved from this

Q1. here the ratio of bicarbonate to carbonic acid is 25/1

so on substituting, pH=6.1+log 1.3979

pH=7.497

Q2. the ratio of bicarbonate to carbonic acid is 20/1.5

so on substituting pH=6.1+log 13.333

pH= 7.22

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