Calculation of pH (acidity) of solutions :: Vypocet pH (kyslosti) roztokov

Definition :: Definicia: pH = - log [H⁺]

! For acidity calculations I need to know the molar concentration of [H⁺] ions in a litre of solution [mol/l]
! Pri vypoctoch kyslosti musim poznat molarnu koncentraciu [H⁺] ionov v litri roztoku [mol/l]

The molar concentration of the solution is pre-specified [H⁺] = 1.10^-7 (e.g. water)
Molarna koncentracia roztoku je: (zadane je vopred [H⁺] = 1.10^-7 - napr. voda)

NOTE - Poznamka
For example, if I have 3.645 grams of hydrochloric acid - HCl dissolved in a solution, its molecular weight according to the periodic table is 35.45 + 1.00 = 36.45 g/mol. Thus, in one liter there is 3.645 : 36.45 = 0.1, i.e., [H+] = 0.1 mol/liter	Napr. ak mam vo vode rozpustenych 3,645 gramov kyseliny chlorovodikovej - HCl, tak jej molekulova hmotnost podla udajov z periodickej tabuLky je 35.45 + 1,00 = 36,45 g/mol. V jednom litri je teda 3.645 : 36.45 = 0.1, t. j. [H+] = 0.1 mol/l
!pH of pure water = 7 (because the molar concentration of [H+] = 0,0000001 mol/l]