Calculate the hydrogen ion concentration in the following biological fluids whose pH are given below:
A. Human muscle-fluid, 6.83
B. Human stomach fluid, 1.2
C. Human blood, 7.38
D. Human saliva, 6.4.
a) Human muscle fluid 6.83:
⇒pH = 6.83
⇒pH = – log [H+]
⇒6.83 = – log [H+]
⇒[H+] =1.48 × 10–7 M
(b) Human stomach fluid, 1.2:
⇒pH =1.2
⇒1.2 = – log [H+]
⇒[H+] = 0.063
(c) Human blood, 7.38:
⇒pH = 7.38
⇒pH = log [H+]
⇒[H+] = 4.17 × 10–8 M
d)Human saliva, 6.4:
⇒pH = 6.4
⇒6.4 = – log [H+]
⇒[H+] = 3.98 × 10–7