Ka waluwo chik mari mar “ber, kony, tiyo kod dongruok,” sani waseyudo yie kod pak kuom jonyiew mag pinywa kod mag piny mangima kuom gik ma ng’ato nyalo ng’iewo e kar loso gikmoko, ber ma malo kod nengo mag ng’wech miyo gik ma watiyogo bedo gi mor e rang’iny ma malo kuonde duto e wachno.
Ka waluwo chik mari mar “ber, kony, tiyo maber kod dongruok”, sani waseyudo yie kod pak kuom jonyiewwa mag pinywa kod mag piny mangima kuom , Bedo gigo ma nigi nyalo mar dwoko penjo mag kambi marwa, dwoko magwa mag puonjruok osetem kendo osemiyowa oboke mag loch ma nigi lony. Mondo iyud weche mathoth mag paramita kod list mar gik moko, bed gadier ni idhi klik baton mondo iyud weche mathoth.














5. Tem:
1. Asid mar Formik:
a. Oboke: Pim kilo ma romo g 5 mag sampul (ka itiyo gi gino ma ng’ato nyalo pimgo) e ng’injo ma nigi ml 100. Oketo 2 ng’injo mag ng’injo ma nyiso ni ng’ato nigi ng’injo kendo oting’o ng’injo ma 2 N mar NaOH nyaka chop kama rangi makwar oneno. Oting’o pi e bath mar pi nyaka chop nus mar pi ma ne en-go chon. 10:10, 11. 10 Oketo asidi gi 5 ml mar HCl ma oting’o ng’injo, kendo oting’o e kwan mar 250 ml mar ayodin ma nigi 50 ml mar pi kod 50 ml mar NaBrO ma nigi 0.1 N. Ogeng’e maber, oriw maber, kendo iwe mondo ochung’ kuom dakika 30. ml mar KI ma 16.5%, 20 ml mar HCl ma 6 N, kod 2 ml mar pi ma nyiso ni ng’ato nigi mtoka. Titre gi 0.1 N Na2S2O3 nyaka rangi ma bulu lal (giko). Tim penj ma onge gimoro e kinde achiel.
b. Kwano: (Ml maongee gimoro – Ml mar ranyisi) × 0.1 (Kima pile) × 0.02301 = gram mag HCOOH
c. <2Zepa> 2:10, 11. 10 Ng’eyo ni: Keto ng’ato e wi pi ma ng’ato nyalo ng’iyogo bang’ keto NaOH, en gi gombo mar ng’ado pi kendo golo asetaldehyde, ma ka ok kamano, mano nyalo kelo duoko maber.
2. Asetaldehaid:
a. Oboke: Pim gi g 10 mag asidi ma ng’we ng’ar (ka itiyo gi gino ma ng’we ng’ar) e ng’we ng’ar ma nigi mililita 250 mag ayodin. Inyalo keto mililita 50 mag pi, kae to iketo mililita 10 mag pi mar NaHSO3 ma romo 4% e flask. Ogeng’e maber, oting’o, kendo oweyo mondo ochung’ kuom dakika 30. ml mar ng’injo ma nyiso ni ng’ato nigi ng’injo kendo oting’o ng’injo mar Iodine ma 0.1 N nyaka chop kama rangi ma bulu onen (giko). Tim penj ma onge gimoro e kinde achiel.
b. Kwano: (Ml maongee gimoro - Ml mar ranyisi) × 0.1 (Kima pile) × 0.02203 = gram mag CH3CHO
6. Loso gik ma itiyogo:
0.1 N: Ket 2.8 ml mar bromin e 500 ml mar pi. 100 ml mar NaOH ma 2 N kendo ng’ad nyaka chop otur. 1000 ml mondo iyud 0.1 N mar NaBrO.
6. Gigo ma itiyogo e loso gik ma kelo asetik mag glasial:
0.1 N: Ket 2.8 ml mar bromin e 500 ml mar pi. 100 ml mar NaOH ma 2 N kendo ng’ad nyaka chop otur. 1000 ml mondo iyud 0.1 N mar NaBrO.