Bang is sugar free, but contains the following ingredients: Citric acid, caffeine, sodium benzoate, potassium citrate, amino acids (just use generic amino acid structure), potassium phosphate, sucralose (pka 11.91), vitamin C, potassium sorbate, creatine, and vitamin B12 (methylcobalamin).  Bang has a pH of 4.0

 

A) Looking at the nutritional facts on the label.  Identify the acidic compounds.

 

B) Draw the structure of caffeine when located in bang

 

C) Explain why caffeine is usually found under acidic conditions in beverages

 

D) To the aqueous solution of Bang, you added ammonium hydroxide until the pH was 10.  Draw the mechanism for caffeine and ammonium hydroxide. Identify the pKa for the acid and conjugate acid and show direction of equilibrium

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1 Angie Kaeli begins business as a real estate agent with a cash investment of $10,000. 2 Angie hires an administrative assistant. 3 Angie purchases office furniture for $2,900, on account. 8 Angie sells a house and lot for R. Craig; bills R. Craig $4,900 for realty services performed. 21 Angie pays $1,600 on the balance related to the transaction of October 3. 31 Angie pays the administrative assistant $2,200 in salary for October. 1 Angie Kaeli begins business as a real estate agent with a cash investment of $10,000. 2 Angie hires an administrative assistant. 3 Angie purchases office furniture for $2,900, on account. 8 Angie sells a house and lot for R. Craig; bills R. Craig $4,900 for realty services performed. 21 Angie pays $1,600 on the balance related to the transaction of October 3. 31 Angie pays the administrative assistant $2,200 in salary for October.