Una muestra de agua de 100 mL con pH inicial de 9,5 se titulo con Ácido Sulfúrico 0,02 N, la muestra consumió 8 mL del ácido para llegar a un pH de 8,3, luego se necesito de 13 mL adicionales del mismo ácido para llegar a un pH de 4,5. Teniendo en cuenta lo anterior, calcule en ppm de Carbonato de Calcio: a) La alcalinidad debida a los iones hidróxido

b) La alcalinidad debida a los iones bicarbonato

c) La alcalinidad debida a los iones carbonatos

d) La alcalinidad total

Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml