File:11. Добивање базен оксид.webm

From testwiki
Jump to navigation Jump to search
11._Добивање_базен_оксид.webm (file size: 50.9 MB, MIME type: video/webm)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

Summary

Description
Македонски: Експеримент за добивање базeн оксид. Магнезиумова лента се пали го помош на гасна греалка. При горење на магнезиумот се емитира интензивна светлина, при што се образува магнезиум оксид (MgO). Магнезиум оксидот реагира со вода. Промената на бојата на индикаторите (универзален индикатор во првата и фенолфталеин во последната епрувета) потврдуваат дека средината е алкална (базна) поради образуваниот магнезиум хидроксид (Mg(OH)2). Со помош на универзална индикаторска хартија се покажува дека рН-вредноста на овој раствор е околу 8. Равенките на реакциите што се одвиваат се:
(1) 2Mg(s) + O2(g) = 2MgO(s); и
(2) MgO(s) + H2O(l) = Mg(OH)2(aq).
Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје.
English: Experiment showing synthesis of a basic oxide. Magnesium ribbon is ignited by burner. Magnesium burns emitting intense light and forming magnesium oxide (MgO). Magnesium oxide reacts with water. The colour change of the indicators (universal indicator in the first and phenolphthalein in the last test tube) indicate alkaline (basic) medium due to the formed magnesium hydroxide (Mg(OH)2). The universal indicator paper shows that the pH value of the solution is around 8. The chemical equations for the above reactions are:
(1) 2Mg(s) + O2(g) = 2MgO(s); and
(2) MgO(s) + H2O(l) = Mg(OH)2(aq).
Planned and performed by Marina Stojanovska, Miha Bukleski and Vladimir Petruševski, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.
Date
Source Own work
Author Petrovskyz

Licensing

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.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

inception

18 October 2016

media type

video/webm

checksum

c271a04738feda6c9d07bd8f438adc50a5fb4b04

determination method or standard: SHA-1

data size

53,376,720 byte

duration

49.305 second

height

1,080 pixel

width

1,920 pixel

File history

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

Date/TimeDimensionsUserComment
current01:47, 18 October 2016 (50.9 MB)wikimediacommons>PetrovskyzUser created page with UploadWizard

The following page uses this file:

Retrieved from "https://en.wiki.beta.math.wmflabs.org/wiki/File:11._Добивање_базен_оксид.webm"