practice final sp10 not key

practice final sp10 not key - Chem. 143A Practice 1. Table...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem. 143A Practice 1. Table of Reagents Compound MW (g/mol) mmoles Density (g/ml) Amount Physical Constants Hazards 3- Benzenedicarboxylic acid 166.13 20 3.32 g mp 341-343 ºC irritant Methyl alcohol 32.04 0.791 10 ml mp -98 ºC bp 64.7 ºC Highly Flammable Con. H 2 SO 4 0.5 ml Corrosive Acid, Alcohol and catalytic amount of concentrated sulfuric acid were placed in a flask equipped with reflux condenser and drying tube. The reaction mixture was heated to reflux in sand bath that was preheated to 90 o C. After 90 minutes the reaction mixture was cooled to room temperature and the condenser was removed. 20 ml of saturated NaHCO 3 solution was added and then the reaction mixture was heated for additional 20 minutes at 80 o C. The residue was diluted with 20 ml CH 2 Cl 2 and the aqueous layer was separated. The organic layer was dried over Na 2 SO 4 and the solvent was evaporated to give pure ester. a. Complete the chemical equation. COOH COOH + CH 3 OH H 2 SO 4 b. Calculate how many moles of methyl alcohol were used.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/27/2011 for the course CHEM 143A taught by Professor Whitesell during the Spring '08 term at UCSD.

Page1 / 5

practice final sp10 not key - Chem. 143A Practice 1. Table...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online