Question

Carbon dioxide is soluble in water and forms carbonic acid, biocarbonate ions, and carbonate ions. If a mineral has a PZC (point zero change) of 8.9, what species will adsorb at pH 3? What about pH 9.1? Explain your reasoning.

Answer 1

PZC is defined the pH when the electrical surface charge on surface of molecules is zero.

If pH is less then PZC , the medium will be acidic and vice versa.

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