Organic 2 Review Problem 503

Organic 2 Review - Q UANTITATIVE A NALYSIS 487 packing t hat has p rovided the oxygen necessary for the c ombustion to take place It is essential

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
QUANTITATIVE ANALYSIS 487 packing that has provided the oxygen necessary for the combustion to take place. It is essential that this spent "wire-form" copper oxide is removed and a little more of the oxide beyond it, but it is not necessary to remove all the ''wire-form" copper oxide on each occasion. The tube filling is replenished by adding fresh "wire-form" copper oxide until the packing would just protrude from the furnace if the tube (not including the beak) protruded about 10-15 mm, at the far end of the furnace. When adding the fine "powder-form" copper oxide to the combustion tube it is an advantage to have the tube clamped loosely upright, the beak end resting on the bench. The powder is then added through a small glass funnel, part of whose stem has been cut off, the resulting butt end just fitting into the wide end of the combustion tube. A layer of 25 mm. of "powder-form" copper oxide is now added. Its purpose is twofold; first of all to prevent any particles of the analysis
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/19/2011 for the course CHM 2211 taught by Professor Castalleano during the Fall '06 term at University of Florida.

Ask a homework question - tutors are online