dolor (plural dolors) ( 1 literary) Sorrow, grief, misery or anguish. 2  A unit of pain used to theoretically weigh people's outcomes.
Potassium, K. Reaction with water. When a small piece of potassium is added to water, it produces a hissing sound as it burns with a lilac flame. It also moves about quickly on the water surface. [ image ]. Hydrogen gas is given out in the reaction. The resulting alkaline solution will turn red litmus blue because of the potassium hydroxide formed.
The reaction that occurs is: 2 K(s) + 2 H2O(l) = 2 KOH(aq) + H2(g) This is best understood as a reduction-oxidation (redox) reaction. The potassium is oxidized and some of the hydrogen in the water is reduced. However, if your teacher/professor demands that you learn the antiquated displacement jargon, then we can make it fit that mold.