7.55 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 =1.21.2 =  log [H+] [H+] = 0.063 

(c) Human blood, 7.38:

pH = 7.38 =  log [H+][H+] = 4.17 × 10-8 M 

(d) Human saliva, 6.4:

pH = 6.46.4 =  log [H+][H+] = 3.98 × 10-7