File:Der harn - sowie die übrigen ausscheidungen und körperflüssigkeiten von mensch und tier, ihre untersuchung und zusammensetzung in normalem und pathologischem zustande; ein handbuch für ärzte, (14579537410).jpg

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Identifier: derharnsowiedieb02neub (find matches)
Title: Der harn : sowie die übrigen ausscheidungen und körperflüssigkeiten von mensch und tier, ihre untersuchung und zusammensetzung in normalem und pathologischem zustande; ein handbuch für ärzte, chemiker, und pharmazeuten sowie zum gebrauche an landwirtschaftlichen versuchsstationen
Year: 1911 (1910s)
Authors: Neuberg, Carl, 1877-
Subjects: Biochemistry Excretion Secretion Urine
Publisher: Berlin : J. Springer
Contributing Library: West Virginia University Libraries
Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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Dissoziation aller ihrer Moleküle der Quotient -^- = oc sein. Das elektrische Leitvermögen /U einer Lösung, in welcher der Elektrolyt vollständig dissoziiert sein soll, istgleich der Summe des Leitvermögens des Kations (lK) und des Leitvermögensdes Anions (lA): ^ = 1r + ^ Dementsprechend wird, wenn der Elektrolyt nicht ganz dissoziert ist, Xv = «(h + Ia)und ; *= l ■ 7 sein. *£ +■ *a Beispiel: Es handle sich um eine NaCl-Lösung, die bei 18° ein äquivalentes Leit-vermögen ;.„= 93 zeigt. Welches ist der Wert von oc für diese Lösung? 1452 Elektrische Leitfähigkeit. Aus den Tabellen von Kohlrausch ersieht man: lK = 44,4 (Äquivalent-Leitvermögder Na-lonen), lA = b5,9 (Äquivalent-Leitvermögen der Cl-Ionen): folelich ist- 93 mögen93 = 0,84 44,4 + 65,9 110,3 Das heißt, daß diese Lösung bei 18° nicht alle NaCl-Moleküle in Na+ und C\~ dissoziiertzeigt (denn wenn es so wäre, würde « = 1 sein), sondern nur den Bruchteil 0,84 der Ge-samtzahl der gelosten Moleküle.
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Fiff. 19. Von einigen der am meisten vorkommenden Ionen sei hier die Leitfähig-keit (oder Wanderungsgeschwindigkeit) bei 18° angegeben:k = H+, 318; K + , 65,3; NH4+, 64,2; ;Ba+, 57,3; Ag+, 55,7; Sr+, 54; £Ca+, 53; -J-Mg + , 49; Na+, 44,4;h = OK-, 174; ISOr, 69,7; Cl, 65,9; NO, 60,8. Elektrische Leitfähigkeit. 1453

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  • bookid:derharnsowiedieb02neub
  • bookyear:1911
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Neuberg__Carl__1877_
  • booksubject:Biochemistry
  • booksubject:Excretion
  • booksubject:Secretion
  • booksubject:Urine
  • bookpublisher:Berlin___J__Springer
  • bookcontributor:West_Virginia_University_Libraries
  • booksponsor:LYRASIS_Members_and_Sloan_Foundation
  • bookleafnumber:505
  • bookcollection:west_virginia_university
  • bookcollection:americana
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28 July 2014
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