Video: Dab tsi yog alkali hlau siv rau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Sodium yog tam sim no qhov tseem ceeb tshaj plaws alkali hlau nyob rau hauv cov nqe lus ntawm industrial siv. Cov hlau yog ua hauj lwm nyob rau hauv txo cov organic tebchaw thiab nyob rau hauv kev npaj ntawm ntau coj mus muag tebchaw. Raws li ib tug dawb hlau , yog siv raws li cov kua hluav taws xob hloov pauv hauv qee lub tshuab hluav taws xob nuclear.
Ua raws li qhov no hauv kev xav, dab tsi yog kev siv cov hlau alkali?
- Hydrogen yog siv nyob rau hauv: hydrogen roj, huab cua balloons thiab nws tsim dej.
- Lithium yog siv nyob rau hauv: Roj teeb, nyob rau hauv daim ntawv ntawm lithium carbonate nws yog siv los tswj tej yam kev puas hlwb thiab iav.
Ib yam li ntawd, cov hlau alkali khaws cia hauv dab tsi? Txhawm rau txo qis kev sib cuag nrog oxygen thiab dej, alkali hlau yuav tsum yog khaws cia nyob rau hauv ib lub thawv airtight nyob rau hauv cov roj ntxhia thiab / los yog nyob rau hauv ib tug inert gas, xws li argon. Cov hnab looj tes nrog cov cua inert yog qhov chaw tsim nyog rau kev khaws cia alkali hlau.
Xav txog qhov no, cov hlau alkali nyob qhov twg?
Alkali hlau yog cov tshuaj cov ntsiab lus pom nyob rau hauv pab pawg 1 ntawm lub sijhawm teem sijhawm. Cov alkali hlau muaj xws li: lithium, sodium, potassium, rubidium, cesium, thiab francium.
Puas alkalis teb nrog cov hlau?
Kev tshwm sim ntawm Base nrog Hlau : Thaum twg alkali (base) reacts nrog hlau , nws tsim ntsev thiab hydrogen gas. Piv txwv li: Sodium hydroxide muab hydrogen gas thiab sodium zincate thaum reacts nrog zinc hlau.
Pom zoo:
Dab tsi yog kev siv cov saw hlau nuclear siv rau?
Nuclear chain reaction. Nuclear chain reactions yog cov tshuaj tiv thaiv uas tau txais lub zog nuclear, feem ntau los ntawm nuclear fission. Cov kev cuam tshuam ntawm cov saw hlau no yog qhov muab cov chaw tsim hluav taws xob nuclear nrog lub zog uas tom qab ntawd hloov mus ua hluav taws xob siv los ntawm tib neeg
Dab tsi yog cov hlau hloov pauv siv rau?
Kev hloov pauv hlau muaj ntau yam kev siv, nrog rau qee qhov tseem ceeb hauv qab no: Hlau feem ntau ua rau cov hlau, uas muaj zog dua thiab yooj yim dua li cov hlau ntawm nws tus kheej. Nws yog dav siv nyob rau hauv kev tsim kho cov ntaub ntawv, cuab yeej, tsheb thiab raws li ib tug catalyst nyob rau hauv kev tsim cov ammonia
Muaj pes tsawg valence electrons pom nyob rau hauv halogens cov alkali hlau thiab alkaline ntiaj teb hlau?
Cov halogens tag nrho muaj cov txheej txheem hluav taws xob dav dav ns2np5, muab rau lawv xya valence electrons. Lawv yog ib qho hluav taws xob luv luv uas muaj tag nrho sab nrauv s thiab p sublevels, uas ua rau lawv muaj zog heev. Lawv tau txais cov tshuaj tiv thaiv tshwj xeeb nrog cov reactive alkali hlau
Dab tsi lub cev muaj zog ua rau tag nrho cov alkali hlau muaj?
Cov yam ntxwv ntawm Alkali Metals Pom nyob rau hauv kem 1A ntawm lub sijhawm teem sijhawm. Muaj ib tug electron nyob rau hauv lawv txheej txheej ntawm electrons. Yooj yim ionized. Silvery, mos, thiab tsis ntom. Tsawg melting ntsiab lus. Zoo kawg nkaus reactive
Puas yog alkali hlau thiab alkaline ntiaj teb hlau zoo ib yam?
Valance: Tag nrho cov alkali hlau muaj ib qho hluav taws xob nyob rau hauv lawv lub plhaub sab nraud thiab tag nrho cov alkaline ntiaj teb hlau muaj ob sab electrons. Yuav kom ua tiav cov kev teeb tsa muaj txiaj ntsig zoo, cov hlau alkali yuav tsum poob ib lub tshuab hluav taws xob (valence yog "ib"), thaum alkaline ntiaj teb hlau yuav tsum tshem tawm ob lub electrons (valence yog "ob")