143A Exprmnt 2 Pre-lab

143A Exprmnt 2 Pre-lab - Name: _ Date: _01-19-2011_ TA...

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

View Full Document Right Arrow Icon
Name: _________________ Date: __01-19-2011 __ TA signature: _________________________ Experiment# : __2 _________ Chemicals to be Used Today: Unknown solid mixture MTBE 5% HCl 10% NaOH Equipment to be Used Today: Scale Separatory funnel Erlenmeyer flask Beaker Boiling stone Warm sand bath Fume hood Steps to Follow for this Part of the Experiment: Dissolve 300 mg of unknown solid mixture in 15 mL of MTBE in a separatory funnel. Label. Part 1: Isolation of the Amine 1) Extract the MTBE solution with 5 mL portions of 5% HCl. 2) Drain acidic aqueous layers into an Erlenmeyer flask. Label 3) Repeat 3 times. 4) Drain the remaining MTBE solution to a separate flask and save. 5) Add 10% NaOH to the aqueous acidic solution in a dropwise fashion until the pH tests basic with litmus paper. 6) Return the mixture to the separatory funnel and rinse with MTBE to dissolve any precipitate. 7) Add 5 mL of MTBE and extract the solution. Label. 8) Repeat 2 more times and consolidate the aqueous extract. Set aside.
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 03/06/2012 for the course CHEM 143A taught by Professor Whitesell during the Winter '08 term at UCSD.

Page1 / 2

143A Exprmnt 2 Pre-lab - Name: _ Date: _01-19-2011_ TA...

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