GLYCERIDES.) If R.X is the salt of a weak acid and a strong base, its aqueous solution will react as a base towards an indicator such as litmus, for the acid R•H is only feebly ionised, and hence the hydroxyl ions from the base will predominate ; potassium cyanide and sodium carbonate are examples, and their solutions are said to undergo "hydrolysis." Conversely, the solution of the salt of a weak base and a strong acid, e.g., ferric chloride, will be acidic. If both the acid and the base are weak, the salt may be so greatly hydro lysed as to be almost entirely decomposed into its constituent acid and base in aqueous solution. See also CHEMICAL ACTION and