Qhov piv ntawm moles ntawm dej rau moles ntawm CuSO4 yog dab tsi?
Qhov piv ntawm moles ntawm dej rau moles ntawm CuSO4 yog dab tsi?

Video: Qhov piv ntawm moles ntawm dej rau moles ntawm CuSO4 yog dab tsi?

Video: Qhov piv ntawm moles ntawm dej rau moles ntawm CuSO4 yog dab tsi?
Video: Saib tias ntawm ntsej muag 2024, Kaum ib hlis
Anonim

Faib tus naj npawb ntawm moles dej poob los ntawm tus naj npawb ntawm moles ntawm anhydrous ntsev kom tau piv ntawm dej molecules rau formula units. Hauv peb qhov piv txwv, 0.5 moles dej ÷ 0.1 moles tooj liab sulfate = 5: 1 piv . Qhov no txhais tau tias rau txhua chav tsev CuSO 4 Tam sim no, peb muaj 5 molecules ntawm dej.

Tsis tas li lo lus nug yog, pes tsawg moles ntawm dej tam sim no ib mole ntawm CuSO4?

5 moj

Qhov thib ob, tus mole piv ntawm anhydrous alum rau dej yog dab tsi? Hauv thawj lub cev qhuav dej peb tau txais a mole ratio ntawm 1 mole ntawm alum rau 11 moles ntawm dej . Vim peb paub qhov tseeb piv yog 1:12, nws tuaj yeem suav tau tias ua yuam kev.

Ib tug kuj yuav nug, qhov piv ntawm tooj liab sulfate rau dej yog dab tsi?

Cov molar piv nruab nrab dej thiab tooj liab (II) sulfate Hauv nws daim ntawv hydrous tau pom tias yog 1: 4, 973 (Tshooj 2.2). Qhov no tuaj yeem muab sib npaug mus rau 1: 5, muab cov qauv qhia pom ntawm hydrous ntsev hauv nqe lus nug CuSO4 ∙ 5 H2O.

Yuav ua li cas koj nrhiav tau tus naj npawb ntawm moles ntawm dej nyob rau hauv ib tug hydrate?

  1. Siv qhov loj ntawm hydrate thiab rho tawm qhov loj ntawm cov anhydrate kom tau cov dej loj.
  2. Faib qhov loj ntawm cov dej los ntawm molar loj ntawm cov dej kom tau moles ntawm dej.
  3. Faib qhov loj ntawm anhydrate los ntawm molar loj ntawm anhydrate kom tau moles ntawm anhydrate.

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