Which of the following statements regarding grignard reagents are true? 1. grignard reagents tend to act as bronsted acids. 2. grignard reagents decompose rapidly in anhydrous ether solutions. 3. a grignard reagent contains nucleophilic carbon. 4. once prepared , a grignard reagent should be used quickly. 5. the grignard reagent is an example of an organometallic compound.

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

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