File:Kalknachweis (Essigessenz).jpg

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Original file (4,000 × 2,672 pixels, file size: 4.54 MB, MIME type: image/jpeg)

Captions

Captions

A feeble reaction between acetic acid and calciumcarbonate with only a few small bubbles

Summary

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Description
Deutsch: Essigessenz mit 25 % Konzentration auf einem Kalkstein: in der Flüssigkeit bilden sich kleine aufsteigende Blasen. Man muss aber sehr genau hinsehen, etwa mit einer Lupe. Die Reaktion ist sehr viel weniger heftiger als mit der üblicherweise für einen Kalknachweis verwendeten Salzsäure. Der Stein stammt aus dem Steinbruch Blome aus dem östlichen Sauerland (Marsberg) und wurde zur Verfügung gestellt. Der Stein ist beschrieben auf einer anderen Wikimedia-Seite.. Der Bildausschnitt ist quer 3 Zentimeter lang und 2 Zentimeter hoch, man sieht also einen Ausschnitt von 6 Quadratzentimetern. Das Bild entstand in der Mathe-AC Lernwerkstatt in Aachen. Bildquelle: https://www.rhetos.de/lex/kalknachweis_(essigessenz).htm
Date
Source Own work
Author Rhetos

Licensing

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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current11:07, 27 November 2021Thumbnail for version as of 11:07, 27 November 20214,000 × 2,672 (4.54 MB)Rhetos (talk | contribs)Uploaded own work with UploadWizard

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