Video: Lub peev xwm kub ntawm sodium hydroxide yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
| Kub (K) | Cp (J/mol * K) | H° - H°298.15 (kJ/mol) |
|---|---|---|
| 298. | 59.52 | -0.00 |
| 300. | 59.67 | 0.12 |
| 400. | 64.94 | 6.34 |
| 500. | 75.16 | 13.29 |
Raws li, qhov tshwj xeeb kub muaj peev xwm ntawm HCl thiab NaOH yog dab tsi?
Tshwj xeeb kub ntawm HCl & NaOH Solution = 4.017 J/g°C.
Tsis tas li ntawd, dab tsi yog enthalpy ntawm nacl? Yog li, thaum 1 mole ntawm sodium chloride crystals yog yaj nyob rau hauv ib tug ntau ntawm cov dej, lub enthalpy Kev hloov ntawm cov tshuaj pom tau tias yog +3.9 kJ mol-1. Qhov kev hloov pauv yog me ntsis endothermic, thiab yog li qhov kub ntawm cov tshuaj yuav qis dua me ntsis ntawm cov dej qub.
Ib yam li ntawd, kev siv sodium hydroxide yog dab tsi?
- Nws yog cov khoom tseem ceeb hauv cov dej ntws thiab qhov cub ntxuav.
- Nws yog siv rau hauv kev tsim tshuaj, roj refining, hydraulic fracturing, dej kho thiab hlau ua.
- Nws yog siv rau hauv kev tsim cov ntaub, yas qhwv, ntawv thiab xab npum.
Koj ua li cas xam cov peev xwm tshwj xeeb?
Cov units ntawm tshwj xeeb kub muaj peev xwm yog J / (kg ° C) lossis sib npaug J / (kg K). Cov Thaum tshav kub kub muaj peev xwm thiab cov tshwj xeeb kub muaj feem cuam tshuam los ntawm C = cm lossis c = C / m. Mas m, tshwj xeeb kub c, hloov kub ΔT, thiab kub ntxiv (los yog rho tawm) Q muaj feem cuam tshuam los ntawm kev sib npaug : Q=mcΔT.
Pom zoo:
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