Because 'sdoium stearate' is the conjugate base of the weak carboxylic acid 'stearic acid'. Since a solution of stearic acid would be slightly acidic, a solution of sodium stearate will be basic or alkaline.
Soaps contain sodium salts of weak carboxylic acids such as sodium stearate which show weakly alkaline behavior.
what is difference beetwin sodium stearate and potassium stearate
Sodium chloride is soluble in water, calcium stearate not.Put the mixture in water, stir and filter; sodium chloride remain in solution, calcium stearate on the filter.
C17H35COONa
bathtub ring
Soaps contain sodium salts of weak carboxylic acids such as sodium stearate which show weakly alkaline behavior.
what is difference beetwin sodium stearate and potassium stearate
Sodium chloride is soluble in water, calcium stearate not.Put the mixture in water, stir and filter; sodium chloride remain in solution, calcium stearate on the filter.
soaps
White
2Na+ C18H35O2- (solute) +Mg++ = Mg(C18H35O2)2 (precipitate) + 2Na+
sodium stearate C17H35COONa , sodium palmitae C15H31COONa
C17H35COONa
i don't have a clue!
bathtub ring
Calcium stearate is carboxylate of calcium that is found in some lubricants and surfactants. It is a white waxy powder. It is produced by heating stearic acid, a fatty acid, and calcium oxide. It is also formed when sodium stearate is added to hard water (as scum). Sodium stearate + CaSO4 -----> C36H70CaO4 + Na2SO4 OR Sodium stearate + Ca(HCO3)2-------------> C36H70CaO4 + NaHCO3 Anyway, just wanted to refresh your memory a little bit... The formula is, as mentioned earlier : C36H70CaO4 Oh, and sodium stearate's just a fancy word for soap...
Metal hydroxides make alkaline solutions.(e.g sodium hydroxide) Pascal