Consider the half reactions below for a chemical reaction. Upper Z n right arrow upper Z n superscript 2 plus (a q) plus 2 e superscript minus. Second line: upper C u superscript 2 plus (a q)plus 2 e superscript minus right arrow upper C u (s)

What is the overall equation for this chemical reaction?

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

The reaction q+r2=r2q is found to be first order in r2 and

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