Three white wine brands, Dugong, Mochi, and Bertha were tested for tartaric acid (FW=150.09) content. Tartaric acid has two acidic hydrogens. The allowable tartaric acid content in wine is in between 0.5 g to 10 g per liter. The wine is considered to be unstable with too much tartaric acid content. However, since the bottle storing NaOH was left ajar for over two weeks, this was standardized again with KHP (FW=204.22) thrice with the following masses of KHP and their respective volumes of NaOH, as in Table 1. Table 1. Standardization of NaOH with KHP Trial 1 Trial 2 Trial 3 w(KHP), mg 200.0 198.5 187.6 V(NaOH), mL 20.00 18.20 19.40 c(N2OH), M ? ? ? Preparation of the wine sample: 50.00 mL of each wine (d=1.75 g/mL) was diluted to 250.0 mL with water and a 50.00 mL aliquot was titrated with the NaOH, with results in Table 2. Table 2. Volume of NaOH needed Dugong Mochi Bertha V(N2OH), mL w(tartaric acid), mg 20.00 18.20 19.40 ? ?

What is the theoretical COD of mixture containing 150 mg/L phenol and 50 mg/L acetic acid

3. When Aspirin (acetylsalicylic acid) is heated in boiling water, it goes through hydrolysis decomposes. The resulting solution gives a positive FeCl3 test. Why is this test positive? What is the reaction? Give an equation for the reaction of hydrolysis.

Bicarbonate (shown below) functions as a conjugate base within the plasma's bicarbonate buffer system. Bicarbonate also was important for the: OI (10 OH O process of lipogenesis (triacylglycerol synthesis) rate-limiting step in fatty acid metabolism O process of lipolysis (triacylglycerol metabolism) committed step in fatty acid synthesis J Bicarbonate (shown below) functions as a conjugate base within the plasma's bicarbonate buffer system. Bicarbonate also was important for the: C10 OH O process of lipogenesis (triacylglycerol synthesis) Ⓒrate-limiting step in fatty acid metabolism O process of lipolysis (triacylglycerol metabolism) committed step in fatty acid synthesis