Acid-base equilibria in dilute flotation solutions

ACID-BASE EQUILIBRIA IN DILUTE FLOTATION SOLUTIONS 

According to Sugha and Kotrly (1972), it was Arrhenius who, toward the end of the 19th century, defined for the first time substances which release H+ ions in their aqueous solutions as acids (AH) and those which release OH as a base (BOH)  

In 1923, Lewis (Sugha and Kotrly, 1972) proposed an acid-base theory in which the electron acceptor was defined as a an acid and the electron donor as a base. Most reagents except neutral oils can be considered as an acid or a base. For example, cationic activators such as Cu +, Pb +, Ca + are acids and collectors such as R-COO, R-0-CSS are bases. Solution equilibria of these reagents can therefore be derived from their acid-base equilibria. Four basic formulae required for equilibrium calculations are given below with Na2C03 as the example  

Strong acid and strong base type of reagents 

Mono weak acid-weak base weak type of reagents For a weak monoatomic acid, HA, relevant equilibria in solutions are  

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Acid-base equilibria in dilute flotation solutions... 

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