ububo

1.
Na-enweta gas hydrogen sulfide gas na alkali sulfide ngwọta (ma ọ bụ caustic sod). N'ihi na gas sulfide gas bụ ihe na-egbu egbu, a ga-eme ka a ga-emeghachi omume na-adịghị mma. Iji gbochie mmetọ dị elu nke ikuku site na ikuku na-agwụ ike, a na-arụ ọrụ na -emepụta ọdịnaya, yana hydrogen sọlfọ na-belata ka ọ bụrụ nke dị ala mgbe a na-etinye oge. Ire mmiri na-egbochi ihe ga-eme ka ọ nweta sodium hydrosulfide. Usoro kemịkal ya:
H2S + NaEH → NaHs + H2O
H2S + Na2s → 2nahs

2.
Na mpekere na-acha uhie uhie na-acha ọla kọpa, tinye 20ml nke sodium dị larịị na-enweghị mmachi, wụnye a na-efe efe na flask, ma mechie alaka ahụ. Mgbe sodium Alkoxide bụ nke preperitimeted, tinye ihe dị ka 40 ml nke ethanol zuru oke na bat ruo mgbe sodium alkoxide a na-etisasịwo kpamkpam.
Tinye otu iko tube n'ime ala nke ihe ngwọta site na alaka papa, ma na-agafe mmiri hydrogen sulfide gas (rịba ama na ọ dịghị ikuku na-enweghị ike ịbanye na mkpọsa ahụ. Satutekwate. Ihe ngwọta a gbanwere iji wepu forpipitate. A na-echekwa fillet akọrọ na-acha uhie uhie na-agbakwunye na 50 ml zuru oke na-agbakwunye, na nnukwu ego nke nahs na-acha ọcha na-enweghị isi. Ngụkọta nke ihe dị ka 110 ml nke ether chọrọ. A na-ehicha mkpụrụzigharị ngwa ngwa, saa 2 ugboro 2-3 ugboro ya na eather, chara acha, ma tinye ya na oghere dị iche iche. Ịdị ọcha nke ngwaahịa ahụ nwere ike iru ịdị ọcha nke nyocha. Ọ bụrụ na achọrọ Nahs dị elu, enwere ike ịgbasa ya na ethanol ma tinye ya na ether.

3sodium hydrosulfide mmiri:
Kpochapu sodium sulfide na-abụghị mmiri na mmiri na-acha uhie uhie, wee jiri 13% na2s (w / v) ngwọta. 14 g nke sodium bicarbonate na ngwọta dị n'elu (100 ml) na-akpali ma na-akpali ma n'okpuru 20 Celsius C, ozugbo ịhapụrụ ma bulie ya. Mgbe nke ahụ gasịrị, 100 ml nke methananol na-akpali ma na-akpali ma n'okpuru 20 Celsius C. N'oge a, a na-aaliotherm] ọzọ ma ọ bụrụ na ihe fọrọ nke nta ka ọ bụrụ ka sodium criptane na-acha uhie uhie na-eme ka ọ dị ngwa ngwa. Mgbe minit 0 gasịrị, a na-eji ngwakọta ahụ na-asacha ya na methanol (50 ml) na akụkụ. Filrtrate nwere ihe na-erughị 9 g nke sodium hydrosulfide na ọ bụghị karịa 0,6 pasent nke sodium carbonate. Ntinye nke abụọ ahụ bụ ihe dị ka gram 3.5 na 0,2 gram kwa 100 ml nke ihe ngwọta, n'otu n'otu.

Anyị na-akwado ya site na ịmịkọrọ hydrogen sulfide na sodium hydroxide edozi. Mgbe ọdịnaya (ọtụtụ akụkụ nke sodium hydrosulfide) bụ 70%, ọ bụ dihydrate ma n'ụdị flakes; Ọ bụrụ na ọdịnaya ahụ dị obere, ọ bụ ngwaahịa mmiri, ọ bụ hydrate atọ.