Reducible and Irreducible Components of the pH Value in Dilute Aqueous Solutions of Sodium Chloride
DOI:
https://doi.org/10.15407/ujpe68.3.177Keywords:
aqueous solution, sodium chloride, pH, reducible component, irreducible componentAbstract
Main attention is paid to the definition of the reducible and irreducible components of pH in aqueous salt solutions and to the determination of their temperature and concentration dependences. It is shown that the temperature dependence of the reducible pH component in dilute aqueous solutions of sodium chloride has a linear character and differs from that in pure water only by the value of its slope, which increases, as the salt concentration grows. At the same time, the temperature dependence of the irreducible pH component is non-monotonic and has a minimum at the temperature that is optimal for the human and mammalian life activities (36.6 ∘C). The existence of a characteristic salt concentration dividing the family of the temperature dependences of pH into two subfamilies with different behaviors of their temperature dependences has been established.
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