(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 = – 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