File:13. Каталитичко разложување на водород пероксид.webm

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(WebM audio/video file, VP9/Vorbis, length 20 s, 1,920 × 1,080 pixels, 4.35 Mbps overall, file size: 10.23 MB)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

Description
Македонски: Експеримент кој го опишува каталитичкото разложување на водород пероксидот. Концентрираниот раствор од водород пероксид лесно се разложува на вода и кислород. Овој процес значително може да се забрза со користење на катализатор. Ако парче манган(IV) оксид се стави во концентриран раствор од водород пероксид, започнува егзотермна реакција проследена со издвојување на големо количество кислород и водна пара. Реакцијата може да се опише со равенката:
2H2O2(aq) = 2H2O(g) + O2(g).

Во овој процес, манган(IV) оксидот игра улога на катализатор.

Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје.
English: An experiment describing catalytic decomposition of hydrogen peroxide. A concentrated hydrogen peroxide solution can be easily decomposed to water and oxygen. This process can be speeded up significantly by using a catalyst. If a piece of manganese(IV) oxide is placed in the concentrated hydrogen peroxide solution, an exothermic reaction accompanied by large amount of water vapor and oxygen gas, takes place. The reaction can be described by the equation:
2H2O2(aq) = 2H2O(g) + O2(g).

In this process, the manganese(IV) oxide has the role of the catalyst itself.

Planned and performed by Marina Stojanovska, Miha Bukleski and Vladimir Petruševski, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.
Română: Experiment ce descrie descompunerea catalitică a apei oxigenate. O soluție concentrateă de apă oxigenată (peroxid de hidrogen) se poate descompune ușor în apă și oxigen. Acest proces poate fi accelerat semnificativ cu ajutorul unui catalizator. Dacă în soluția concentrată de apă oxigenată se pune o bucată de oxid de mangan(IV), are loc o reacție exotermă însoțită de degajarea de cantități mari de vapori de apă și oxigen gazos. Reacția poate fi descrisă prin ecuația:
2H2O2(aq) = 2H2O(g) + O2(g).

În acest proces, oxidul de mangan(IV) joacă rol de catalizator.

Planificat și efectuat de Marina Stojanovska, Miha Bukleski și Vladimir Petruševski, Catedra de Chimie, FNSM, Universitatea Sfinții Chiril și Metodiu, Skopje, Macedonia.
Date
Source Own work
Author Petrovskyz

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current00:47, 18 October 201620 s, 1,920 × 1,080 (10.23 MB)Petrovskyz (talk | contribs)User created page with UploadWizard

You cannot overwrite this file.

The following 2 pages use this file:

Transcode status

Update transcode status
Format Bitrate Download Status Encode time
VP9 1080P 928 kbps Completed 21:16, 4 August 2018 48 s
Streaming 1080p (VP9) 866 kbps Completed 17:19, 7 December 2023 2.0 s
VP9 720P 456 kbps Completed 21:15, 4 August 2018 30 s
Streaming 720p (VP9) 393 kbps Completed 18:59, 7 December 2023 2.0 s
VP9 480P 280 kbps Completed 21:14, 4 August 2018 22 s
Streaming 480p (VP9) 218 kbps Completed 23:33, 12 December 2023 2.0 s
VP9 360P 193 kbps Completed 21:14, 4 August 2018 15 s
Streaming 360p (VP9) 131 kbps Completed 03:18, 14 December 2023 1.0 s
VP9 240P 142 kbps Completed 21:14, 4 August 2018 13 s
Streaming 240p (VP9) 90 kbps Completed 17:55, 21 November 2023 6.0 s
WebM 360P 567 kbps Completed 23:44, 17 March 2017 34 s
Streaming 144p (MJPEG) 550 kbps Completed 15:02, 27 October 2023 2.0 s
Stereo (Opus) 61 kbps Completed 08:47, 9 November 2023 1.0 s
Stereo (MP3) 129 kbps Completed 11:29, 27 October 2023 1.0 s

File usage on other wikis

The following other wikis use this file:

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:13._Каталитичко_разложување_на_водород_пероксид.webm&oldid=860935050"