Solvation significantly affects the basicity of amines. Because of the decreased basicity compared to pyridine, electrophilic substitution of pyrimidine is less facile. Addition of potassium alkoxide to alkyllithium greatly increases the basicity of organolithium species. Solvation effects also dominate the basicity of aromatic amines (anilines). Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Alkalinity is sometimes incorrectly used interchangeably with basicity. Therefore, the overall rate of reaction is controlled by carboxylate basicity and solvation. Aside from their basicity, the dominant reactivity of amines is their nucleophilicity. Its basicity is typical of other dialkyl amines. The triflate ligand is labile, reflecting its low basicity. For counteranions, inertness is expressed in terms of low Lewis basicity. Electron lone pair availability (basicity) is decreased compared to pyridine. OH illustrates the basicity of calcium hydroxide. Consequently, the basicity of ammonia is enhanced by 10 by solvation. The basicity and nucleophilicity of carbanions are determined by the substituents on carbon.