And c of this question please? I have attached the rest of the question for refe
ID: 540152 • Letter: A
Question
And c of this question please? I have attached the rest of the question for reference:
At 37 "C,if the plasma pit is 7.40 and the plasma concentration of HCO, is 190 mM C, if the plasma pH is 7.40 and the plasma concentration of HCO, is 19.0 mM, what is the plasma concentration of H2CO3? The pK, of carbonic acid is 3.57 Plasma concentration of H2CO3-0.0028 mMW Correct Given the pH and the concentration of bicarbonate, we can use the following equation to calculate the amount of HC HCO H2CO] pH = pK, t logo (MC03] [HCOg] = 10(7.40-3.57) [H2CO3] = 0.0028 miM What is the plasma concentration of CO2(dis olved)? The equilibrium cons ant for the hydration of CO2 is 3.00× 10 3 at 37 Plasma concentration of CO2(dissolved) 0.93 mM
Explanation / Answer
CO2(g) concentration = 2.85 mM
Equilibrium of hydration of CO2 = K = 3.00*10^-3
K=[H2CO3 ]/[CO2]
3.00*10^-3 = [H2CO3 ]/2.85 mM
[H2CO3] = 3.00*10^-3*2.85 mM = 0.0086 mM
pH =pKa + log [HCO3^-]/[H2CO3 ]
=3.57 + log (19.0/0.0086) = 3.57 + 3.34 = 6.91