Table of Strong Acids and Strong Bases

Hydrochloric Acid
Hydrochloric acid, HCl.

This is a list of the strong acids and strong bases. There aren’t very many, so it’s a good idea to memorize┬áthem, if you can.

Table of Strong Acids

The strong acids ionize completely in water to yield or or more protons per acid molecule.

hydrogen iodide or hydroiodic acidHIH+(aq) + I(aq)
hydrogen bromide or hydrobromic acidHBrH+(aq) + Br(aq)
perchloric acidHClO4H+(aq) + ClO4(aq)
hydrochloric acidHClH+(aq) + Cl(aq)
chloric acidHClO3H+(aq) + ClO3(aq)
sulfuric acidH2SO4H+(aq) + HSO4(aq)*
nitric acidHNO3H+(aq) + NO3(aq)

* HSO4 is a weak acid that contributes additional protons.

Table of Strong Bases

The strong bases ionize completely in water to yield or or more hydroxides per base molecule.

sodium hydroxideNaOHNa+(aq) + OH(aq)
potassium hydroxideKOHK+(aq) + OH(aq)
lithium hydroxideLiOHLi+(aq) + OH(aq)
rubidium hydroxideRbOHRb+(aq) + OH(aq)
cesium hydroxideCsOHCs+(aq) + OH(aq)
calcium hydroxideCa(OH)2Ca2+(aq) + 2OH(aq)
barium hydroxideBa(OH)2Ba2+(aq) + 2OH(aq)
strontium hydroxideSr(OH)2Sr2+(aq) + 2OH(aq)

Calcium hydroxide, barium hydroxide, and strontium hydroxide are not very soluble in water.