Respuesta :
Roughly one in a trillion water molecules are ionized at any given time in a sample of room-temperature water
The dissociation of water can be written as
H2O --------> H+ + OH-
The equilibrium constant for this dissociation is called the kw and has the value 10−^14 One trillion is 10^15
Therefore the number of molecules dissociated should be one in ten trillion.
Water does self-ionize, but not very much. At 25°C (room temperature) and standard atmospheric pressure, one liter of pure, neutral water contains only 0.0000001 moles of each dissociative ion.
What is Ionization ?
Ionization, also known as ionisation, is the process by which an atom or molecule gains or loses electrons to acquire a negative or positive charge, frequently in conjunction with other chemical changes. Ions are the electrically charged atoms or molecules that arise.
- In the creation of salt, an electron is given up by the sodium atom, giving it a positive charge, while an electron is taken by the chlorine atom, giving it a negative charge.
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