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CH 3 CH O SO H + HCl CH 3 CH Cl 2 4
2 NaCl + H 2SO 4(с) → Na 2SO 4 + 2 HCl + H SO
2
3
2
хлороетан

CH CH O SO H + HCl CH CH Cl + H SO
3 2 3 3 2 2 4
хлороетан

Without removing the tube from the clamp tripod,
allow it to cool to room temperature. Then the test tube is
taken out and washed with water. (Carefully, the test tube
was concentrated sulfate acid).

Oxidation of alcohols

Primary and secondary alcohols are oxidized by
3
chromium blend. In two test tubes pour 2-3 cm of chromic
3
mixture and add 1 cm of ethanol to the droplets when
stirring. (Caution! The mixture is heavily heated!), And in
the other one - 1 cm3 of isopropanol. The color of the
solutions varies from orange to green, in the ethanol tube
there is a smell of ethanal (acetic aldehyde) that resembles
the smell of apples (sniff it carefully!), And in a test tube
with isopropyl alcohol, a specific acetone smell.
The orange color of the chromic mixture, which
contains ions of hexavalent chromium, while changing to
green, due to the presence of trivalent chromium ions: