butfer in the A bicarbonate butfer system is an effective physiological blood wh
ID: 705355 • Letter: B
Question
butfer in the A bicarbonate butfer system is an effective physiological blood which helps to maintain a normal physiological pH of 7.4 2H20 coH2Co3(ag)+H2)H0+HCO3 (ag) carbonic acid (acid) bicarbonate ion (conjugate base) Co2 is produced as the tissues rapidly equilibrate (comes to equilibrium) through carbonic acid to bicarbonate ion in the blood The ventilation rate (rate of breathing) controls the amount of CO2 present and therefore, the amount of acid (H30t) in the blood. When normal ventilation rates are altered, the normal pH balance becomes disrupted, causing distress. An increase in ventilation rate would expel more CO2 than normal. Questions 1.) If the lungs fail to expel normal amounts of CO2 due to shallow exhaling that can occur in lung disease, a condition called hypoventilation occurs. According to Le Chatelier's principle, if more CO2 is added to the system illustrated in the equilbrium (not enough expelled) what happens to the acidity of the blood? Which of the four substances in the preceding equilibrium is a measure of the acidity? How might a patient with this condition be treated?Explanation / Answer
1) . 2 H2O + CO2 equilibrium H2CO3(aq) + H2O(l) equilibrium H3O^+ + HCO3^- (aq) .
When hypoventilation occurs ( conc. Of CO2 will rise than normal) then the pH will decrease as the acid concentration will increase as more CO2 will combine with water to form carbonic acid which will dissociate more to give hydronium ion (H3O^+) , which is the measure of the acidity .
This low pH change leads to respiratory acidosis condition .
Treatment;
1. By donig some exercise, the rate of ventilation will increase and CO2 level will be down to normal when more CO2 will be expelled.
2 .By breathing in freshn air having high O2 concentration .
3 .By increasing rate of breathing .
4 . breathing by using O2 cylinder .
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.