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Scheme

In the experiment using sucrose, the following reactions
occur: oxidation of sucrose:

О 11 + 24 CuO→12 CO 2 ↑ + 11 H 2O + 24 Cu
С 12Н 22

the formation of crystalline hydrate CuSO 4 · 5H 2O:

CuSO 4 + 5 H 2O → CuSO 4 · 5H 2O

White blue turbidity of lime water:

Са(ОН) 2 + СО 2 → СаСО 3 ↓ + Н 2О

Detection of Nitrogen

3
In a test tube, add 1-2 g of the test substance, add 1-2 cm of
30% sodium hydroxide solution and heat for 1-2 minutes. The
organic matter is destroyed and ammonia vapor is released.
Ammonia is determined by a specific odor or by changing the
color of the universal indicator paper.
Chemistry During the destruction of the organic matter
molecule, nitrogen and hydrogen are first formed, from which
ammonia is then synthesized:

N 2 + 3H 2 → 2NH 3

Detection of Sulfur
3
In a test tube add 1-2 g of the test substance, add 1-2 cm of
30% sodium hydroxide solution and the mixture is boiled for one
minute. Then to the solution add 2-3 drops of 5% solution of