Question

Calculeaza concentratia de ioni hidroniu dintr-o solutie ce prezinta urmatoarele valori ale ph-ului:a) 11,013b) 4,902c)7,002d) 6,127e)13,191f) 12,77

Answer 1

plecam de la formula:   pH= - log[H3O+]
a) 11,013= -log[H3O+] => [H3O+] = $10^{-11,013}$
b) 4,902= - log[H3O+] => [H3O+]= $10^{-4,902}$
c) 7,002= - log[H3O+] => [H3O+]= $10^{-7,002}$
d)  6,127= - log [H3O+] => [H3O+]= 10^{-6,127} [/tex]
e) 13,19= -log[H3O+] => [H3O+]= $10^{-13,19}$
f) 12,77= -log[H3O+] => [H3O+]= $10^{-12,77}$ 

sunt niste numere cam ciudate,dar asta e algoritmul corect