Wikimedia Meta-Wiki

File:37. Реакција на калиум со вода.ogv

Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 28 s, 1,920 × 1,080 pixels, 5.39 Mbps overall, file size: 18.07 MB)

This is a file from the Wikimedia Commons. The description on its description page there is copied below.

Summary

Description
Македонски: Мало парче калиум се става во епрувета во која има вода. Епруветата е поставена во сад со вода заради безбедносни причини. Кога металот доаѓа во контакт со водата, веднаш започнува реакција која е значително побурна во однос на реакцијата со литиум и со натриум.

2K(s) + 2H2O(l) = 2KOH(aq) + H2(g)

Кога ќе се стават неколку капки фенолфталеин во реакциониот систем, бојата на растворот станува малиновоцрвена. Ова е доказ дека се образувало соединение со базни својства (калиум хидроксид, КOH).

Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје.
English: Small piece of potassium metal is added in a test tube filled with water. The test tube is placed in a jar with water for safety reasons. When the metal touches the water a reaction far more vigorous then the one with lithium or sodium, can be observed.

2K(s) + 2H2O(l) = 2KOH(aq) + H2(g)

When few drops of phenolphthalein are added to the reaction mixture, the color of the solution becomes raspberry red. This is an indication that a compound with basic properties (potassium hydroxide, KOH) has been formed.

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 Карас Студио

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

22 January 2020

media type

application/ogg

checksum

9b7693a647d61ba3ee29ba090ab870ef81b59f01

determination method or standard: SHA-1

data size

18,952,082 byte

duration

28.1386666666667 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/TimeThumbnailDimensionsUserComment
current12:29, 22 February 202028 s, 1,920 × 1,080 (18.07 MB)ИнокентијUser created page with UploadWizard

The following page uses this file:

Global file usage

The following other wikis use this file:

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from "https://meta.wikimedia.org/wiki/File:37._Реакција_на_калиум_со_вода.ogv"