2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib kauj ruam los ntawm cov lus teb: Orthophosphoric acid lossis H3PO4 thaum rhuab mus rau qhov kub ntawm 250 ∘ C yields pyrophosphoric acid thiab dej raws li cov khoom ntawm nws cov tshuaj tiv thaiv.
Thaum orthophosphoric acid yog cua sov ntawm 240 degrees Celsius cov khoom tseem ceeb tsim yog?
Thaum orthophosphoric acid yog rhuab ntawm 240^@ C, cov khoom tseem ceeb tsim yog. 2H3PO4240∘C→H4P2O7+H2O.
Thaum orthophosphoric acid yog cua sov cov khoom daim ntawv yog?
Thaum orthophosphoric acid (H3PO4) yog cua sov thiab lub cev qhuav dej tshwm sim. Nws tsim metaphosphoric acid (HPO_3).
Yuav ua li cas thaum orthophosphoric acid yog cua sov?
Kev piav qhia: Orthophosphoric acid yog nrog cov mis molecular ntawm. Thaum cua sov nws muab pyrophosphoric acid.
YPyrophosphoric acid muaj dab tsi?
Pyrophosphoric acid, tseem hu ua diphosphoric acid, yog cov tshuaj inorganic nrog cov mis H 4 P 2 O 7 los yog piav qhia ntxiv, [(HO)2P(O) 2O. Tsis muaj xim thiab tsis muaj ntxhiab, nws yog soluble hauv dej, diethyl ether, thiab ethyl cawv . Cov anhydrous acid crystallizes nyob rau hauv ob polymorphs, uas yaj ntawm 54.3 ° C thiab 71.5 ° C.
Pom zoo:
Los ntawm cov khoom tsim thaum lub sij hawm tsim cov bakelite yog?
Nyob rau hauv rooj plaub ntawm bakelite phenol thiab formaldehyde condense los tsim cov monomer muab H2O raws li cov khoom lag luam. Bakelite tseem hu ua co-polymer. Cov tshuaj tiv thaiv: Phenol reacts nrog formaldehyde los tsim o-Hydroxy methyl phenol.
Dab tsi yog qhov tseem ceeb ntawm cov cuab yeej ua liaj ua teb thiab cov khoom siv?
Lub roj yuav pab tiv thaiv xeb thiab kho cov ntoo kom nws tsis txhob nqus dej thiab tiv thaiv kev tawg. Tom qab tus kov tau qhuav, siv lub tsho thib ob ntawm cov roj rau cov ntoo yog tias xav tau. Cov cuab yeej siv fiberglass lossis cov tes tuav sib xyaw tsuas yog xav tau kev tu kom zoo.
Puas yog orthophosphoric acid tib yam li phosphoric acid?
Phosphoric acid, tseem hu ua orthophosphoric acid lossis phosphoric (V) acid, yogtsis muaj kua qaubnrog cov tshuaj formula H3PO4. Lub npe phosphoric acid yog dab tsi? Orthophosphoric acid, H3PO4, feem ntau hu ua yooj yim phosphoric acid.
Dab tsi yog qhov tseem ceeb thiab vim li cas nws tseem ceeb los txheeb xyuas koj qhov tseem ceeb?
Qhov tseem ceeb yuav coj koj hauv kev txiav txim siab hauv lub neej thiab ua rau koj taug qab. Qhov tseem ceeb tshaj plaws, qhov tseem ceeb tshaj plaws yuav ua rau koj ntseeg siab hais tias "tsis yog." Lawv pab koj txheeb xyuas qhov xav tau tiag tiag hauv koj lub neej, piv rau lwm tus xav tias tseem ceeb.
Puas yog cov nroj tsuag carnivorous yog cov tsim khoom lossis cov neeg siv khoom?
As producers, cov nroj tsuag tsim lub hauv paus ntawm yuav luag txhua cov khoom noj hauv ntiaj teb. Carnivorous nroj tsuag zoo li "tig rooj" thaum lawv ua raws li cov neeg siv khoom, gobbling kab, qav, thiab cov tsiaj me me. Puas yog Venus flytrap yog tus neeg siv khoom thiab tsim khoom?
