When pure water reaches a chemical equilibrium between whole water molecules and

Question

When pure water reaches a chemical equilibrium between whole water molecules and dissociated ones, which of the following applies?

8. When pure water reaches a chemical equilibrium between whole water molecules and dissociated ones, which ofthe following applies? a. 2H20 H30+ OH- b. At equilibrium, the concentration of water molecules greatly exceeds the concentration of H+ and OH-l c. H+ does not exist on its own, always associated with another water molecule in the form of H30+. d. Only one water molecule in every 554 million is dissociated; concentration of each ion in pure water is 10 -7 at 25c. e. There is only one ten-millionth of a mole of hydrogen ions per liter of pure water and an equal number of hydroxide ions.

Explanation / Answer

A:- a. 2 H20 molecules dissociates to form H3O+ and OH- ions, at equilibrium both side that i.e. towards reactants side (2 H2O) and products side (H3O+ & OH-). Which applies thhe following answer,

a. 2 H2O <===========> H3O+ + OH-

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