文档介绍：SEMIMICRO
AND
MACRO
ORGANIC
CHEMISTRY
BY THE SAME AUTHOR
ORGANIC CHEMISTRY
SEMIMICRO AND ANIC CHEMISTRY
SEMIMICRO
AND
MACRO
ORGANIC
CHEMISTRY
A LABORATORY MANUAL BY
Nicholas D. Cneronis
CHICAGO CITY COLLEGES
NEW YORK • THOMAS Y. PANY
COPYRIGHT, 1942, BY
THOMAS Y. PANY
All rights reserved. No part of this book may be
reproduced in any form, by mimeograph or any
other means, without permission in writing from
the publisher.
FIRST PRINTING, SEPTEMBER 1942
MANUFACTURED IN THE UNITED STATES OF AMERICA
BY THE COLONIAL PRESS INC., CLINTON, MASS.
PREFACE
The present laboratory manual was developed primarily to pro-
vide suitable experiments in elementary laboratory practice for all
levels of students, both the average and the exceptional. Impressed
by the possibilities of the semimicro technic in connection with this
problem, the author began several years ago to experiment with it
in his classes. After mature consideration and six years of trial and
error with all types of students, he believes that it is possible to
attain all the objectives of laboratory practice in elementary or-
ganic chemistry using the semimicro technic. In addition, this
method offers the following advantages over the traditional
method: (1) it permits better adaptation of the laboratory work to
the varying needs of students; (2) it teaches students greater
care, cleanliness, and manipulation; (3) it is more economical; and
(4) it reduces substantially the seriousness of possible accidents
since the quantities of reagents and size of equipment are only
some 10 to 20 per cent as great as with macro methods.
It is realized, however, that a sudden plete shift from
traditional macro methods is usually not practical or desirable.
For this reason, in practically all experiments, semimicro is par-
alleled with the macro method. In this manner teachers may ex-
periment as widely with semimicro technic and with whatever
students the