Not only acids and bases dissociate, water dissociates too: and the equilibrium of this reaction is described by the equation. 1.7. However, in practice we use simplified version of this equation, called water ionization constant (sometimes called also water ion product) 1.4.
A lightning flash preceding its thunder by one second would be approximately 350 metres (0.22 mi) in distance; a delay of three seconds would indicate a distance of about one kilometer (0.62 mi) (3Ã340 m). A flash preceding thunder by five seconds would indicate a distance of approximately one mile (1.6 km) (5Ã340 m).
If avoiding a thunderstorm by 20 miles is good, then 50 to 100 miles of separation is GREAT. Lightning has been know to move horizontally up to 50 miles from a storm. It has also been known to strike under clear skies. This happens when a thunderstorm is on one side of a mountain and it is clear on the other side.