Question

define alkalies and give an example

Answer 1

any base or hydroxide, as soda, potash, etc. that is soluble in water and gives a high concentration of hydroxyl ions in solution; specif., any of the hydroxides and carbonates of the alkali metals

any soluble substance, as a mineral salt or mixture of salts, that can neutralize acids, has a pH greater than 7.0, and turns litmus blue: strong alkalies are caustic

Sodium hydroxide



Potassium hydroxide



Barium hydroxide



Some weak alkalis are:

Ammonia gas



Ammonium hydroxide (ammonia dissolved in water)



Magnesium hydroxide (also called milk of magnesia)