Sodium Hydrosulfide a Wɔyɛ denam NaOH a Wɔtwetwe so

2. 2.025-08-14 na ɛwɔ hɔ

Ɔkwan a Wɔfa so Kwa NaOH a Wɔtaa Fa So

Bere a NaHS sodium hydrosulfide dodow du 70% na ɛwɔ hɔ., ɛyɛ dihydrate flakes.

Sɛ ɛba fam a, ɛwɔ hɔ sɛ nsu trihydrate.

Dwumadikwan:

Wɔde stirrer ne reflux condenser (a wɔde abɔ CaCl2 drying tube) ahyɛ flask a ɛwɔ kɔn kurukuruwa a ne kɔn yɛ abiɛsa a ne kɛse yɛ 1 L mu.

Wɔde nitrogen a ayow tew ahina no mu, afei wɔde gu mu 200 mL (3.4 mol) ethanol a nsu nnim.

Wɔde sodium dade a ɛho tew 12 g (0.522 mol) gu mu nketenkete wɔ kankan na wɔsan de kɔ mu kosi sɛ ɛbɛbɔ koraa.

Wɔde gas inlet tube hyɛ nsuo no mu, na wɔde H2S a ɛyɛ dry (a wɔayow wɔ P2O5) bubbled wɔ 5–10 bubbles/sec ma 2 h wɔ stirring ase.

Sɛ ɛyɛ nwini wie a, wɔde ether a nsu nnim 750 mL ka ho ma NaHS sodium hydrosulfide no tɔ koraa.

Adwumayɛ: .

Wɔde afrafrade no yiyi mu ntɛmntɛm (coarse frit) na amma nsu ankɔ mu.

Wɔde ether a nsu nnim hohoro ade a ɛyɛ den no 3×, afei wɔma ɛyow wɔ vacuum desiccator (CaCl2) mu nnɔnhwerew pii.

Aba: 29.4 g a ɛyɛ ≥98% NaHS a ɛho tew.