pH

Exercise 2

    

The pH of the blood of a healthy man is 7.4. Calculate the concentration of hydrogen ions in $\frac{g}{L}$

$pH$ $=$ $7.4$ $[H_3O^+]$ $=$ $10^{-7.4}$ $=$ $3.9\cdot10^{-8}\frac{mol}{L}$ $C_{H_3O^+}$ $=$ $[H_3O^+]\cdot M_{[H_3O^+]}$ $=$ $3.9\cdot10^{-8}\cdot 19$ $=$ $7.6\cdot10^{-7}\frac{g}{L}$