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Of course,pure water have equal concentrations of H+ and OH-.
dissociation
Dissociation of what? Table salt, for example (NaCl) dissociates into Na+ and Cl- ions in water.
H2o --> h+ + oh-
Dissociation
Z
Of course,pure water have equal concentrations of H+ and OH-.
The strength of an acid or the measure of its tendency to release proton ions (H+) can be indicated from its dissociation constant which is called Ka. The acid dissociation constant, pKa , is the negative logarithm of dissociation constant (Ka).
The dissociation constant of pure water is 1.9E-5.
Dissociation of sodium chloride in water solution: NaCl -----------Na+ + Cl-
Pure water has a natural Ph due to the rate of dissociation to H+ and OH- is equal to rate of association to form H2O. Pure water has no free ions.
hydrogen and water
dissociation
This is a "reaction" with water, a dissociation of the salt in ions.
Another way to describe the dissociation of water is as follows where two water molecules form a hydronium ion (essentially a water molecule with a proton attached) and a hydroxide ion
The reaction is:FeS2 + H2O + 3,5 O2 --------------- FeSO4 + H2SO4It is not a dissociation reaction.
Ions are obtained by dissociation in water.