Video: Puas yog n2 3h2 2nh3 endothermic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov kub ntawm qhov tsim ntawm H2 (g) thiab N2 (gas) nyob rau hauv tus txheej txheem yog xoom (0), thiab tshav kub ntawm kev tsim NH3 (g) yog -46.11 kj / mol, yog li rau tsim ntawm 2 moles ntawm NH3 (g) nws yuav yog - 92.22 kj, The - ve cim yog qhov qhia tau hais tias cov tshuaj tiv thaiv saum toj no yog exothermic nyob rau hauv qhov.
Ib yam li ntawd, nws yog nug, hom tshuaj tiv thaiv yog n2 3h2 2nh3?
Tshuaj Reactions
| A | B |
|---|---|
| N2 + 3H2 2NH3 | synthesis |
| 2H2O2 2H2 + O2 | decomposition |
| (NH4)2SO4 + Ba(NO3)2 BaSO4 + 2NH4NO3 | kev hloov pauv ob npaug |
| MgI2 + Br2 MgBr2 + I2 | ib qho kev tshem tawm |
Tsis tas li ntawd, kev hloov pauv endothermic yog dab tsi? endothermic . Lub ntsiab txhais ntawm endothermic yog tshuaj lom neeg cov tshuaj tiv thaiv uas yog nrog los ntawm kev nqus cua sov, los yog ib yam kab mob uas tsim kom muaj cua sov los tswj nws qhov kub thiab txias. Ib qho tshuaj tiv thaiv uas ua haujlwm tsuas yog thaum tshav kub absorbed yog ib qho piv txwv ntawm cov tshuaj tiv thaiv uas yuav piav raws li endothermic.
Ntawm no, koj yuav ua li cas paub yog nws exo lossis endothermic?
Hauv kev sib npaug tshuaj, qhov chaw ntawm lo lus "kub" tuaj yeem siv tau sai txiav txim seb cov tshuaj tiv thaiv puas yog endothermic los yog exothermic . Yog tias cua sov tso tawm raws li cov khoom ntawm cov tshuaj tiv thaiv, cov tshuaj tiv thaiv yog exothermic . Yog hais tias cua sov tau teev nyob rau sab ntawm cov reactants, cov tshuaj tiv thaiv yog endothermic.
Puas yog n2 3h2 → 2nh3 balanced?
yog N2 + 3H2 → 2NH3 ib sib npaug chemical sib npaug? Tsis yog, qhov sib npaug tsis yog sib npaug . Cov Nitrogen (N) thiab Hydrogen (H) atoms tsis yog sib npaug . Tsis yog, qhov sib npaug tsis yog sib npaug.
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