Pewnugol Hidrosulfiid Sodium e laawol NaOH
Laawol Ƴellitaare NaOH
So NaHS sodium hidrosulfide ina yettoo 70%, ina waɗa ɓuuɓri dihydrate.
E nder ɓuuɓri les, ina woodi no trihydrate ndiyam nii.
Laahal:
Kosam 1 L, les cirƴam, gonɗam e wutteeji tati, ina waɗi ɓuuɓnoowo e ɓuuɓnoowo (jokkondirɗo e tuuba yoorngo CaCl2).
Flask oo ina purgee e azot joorɗo, caggal ɗuum ina chargee e... 200 mL (3,4 mol) etanol mo alaa ndiyam.
12 g (0,522 mol) njamndi sodium laaɓndi ina ɓeydee e ɓuuɓri tokosiri e nder ɓuuɓri e ɓuuɓri haa laaɓa.
Tuuba naatoowo gaas ina waɗee e nder ndiyam ɗam, H2S joorɗo (joorɗo dow P2O5) ina ɓuuɓnee e 5–10 ɓuuɓri/sec fotde 2 h e nder ɓuuɓri.
Caggal nde cooynii, 750 mL eteer mo alaa ndiyam ɓeydee heen ngam ɓuuɓnude NaHS sodium hidrosulfide haa laaɓa.
Golle:
Kosam ɗam ina yaawi filtirde (coarse frit) ngam haɗde ɓuuɓri ɓuuɓde.
Ko tiiɗi koo loowetee ko 3× e eteer mo alaa ndiyam, caggal ɗuum yooree e nder ɓuuɓri (CaCl2) fotde waktuuji keewɗi.
Yiyngo : 29,4 g NaHS laaɓɗo ≥98%.