Bleaching a red rose (2)

T o sl~oto: The bleaching of a red rose by reduction with SOz ... HC1, C-3. Procedure: Boil red rose petals with 30 ml EtOH ... Obsewations: (a) Pink...
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Tested Overhead Proiection Series Compiled by HUBERT N. ALYEA

Princeton University

19. GROUP VI. THE SULFUR FAMILY

D. Sulfur Dioxide (continued) Dem. 571-Reducing

with SOzin G- 1

Experiment developed blj Crosby U . Rogers. T o show: Reducing action of SO2 on I