Indicate the names of the four organic substances reacting with cu (oh) 2.

Copper hydroxide enters with the following organic substances:
1. Reaction with polyhydric alcohols. For example, ethylene glycol.
CH₂ – CH₂ + Cu (OH) ₂ -> CH₂ – CH₂ (copper (II) glycolate) + H₂O
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OH OH O O
\ /
Cu
2. Reaction with aldehydes. Ethanal as an example.
CH3COH + Cu (OH) 2 = CH3COOH + CuO + H2O.
The result is a red precipitate.

3. Reaction with carboxylic acids. Using ethanic acid as an example.
2CH3COOH + Cu (OH) 2 -> (CH3COO) 2Cu + 2H2O.

4. Reaction with carbohydrates. Taking glucose as an example.
HOCH2— (CHOH) 4 — CHO + Cu (OH) 2 -> HOCH2— (CHOH) 4 — COOH + Cu2O + 2H2O.