File:Titrering av stickprov svavelsyra genom neutralisation med natriumhydroxid - reaktionsformel.webm

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Titrering_av_stickprov_svavelsyra_genom_neutralisation_med_natriumhydroxid_-_reaktionsformel.webm ‎(WebM audio/video file, VP8/Vorbis, length 2 min 17 s, 480 × 360 pixels, 275 kbps overall, file size: 4.51 MB)

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I en industri behöver man ha kontroll på vilken koncentration man har av svavelsyra i en stor behållare på flera tusen liter reaktionsblandning. För att kontrollera tar man ett stickprov på 20 ml. Man använder sedan titrering med natriumhydroxid som har en känd koncentration på 0.0100 mol/dm3. Vid en sådan titrering fick laboratoriepersonalen fram att det gick åt 14 ml natriumhydroxid för att nå omslagspunkten för BTB (gult -- grönt -- blått). a) Skriv reaktionsformel för neutralisationsreaktionen som sker när man titrerar.

b) Beräkna koncentrationen i stickprovet -- alltså, vilken koncentration av svavelsyra verkar det vara i reaktionsbehållaren?
Date
Source YouTube: Titrering av stickprov svavelsyra genom neutralisation med natriumhydroxid - reaktionsformel – View/save archived versions on archive.org and archive.today
Author AmmieBerglund

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This video, screenshot or audio excerpt was originally uploaded on YouTube under a CC license.
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This file, which was originally posted to https://www.youtube.com/watch?v=vTvZg9mh70U, was reviewed on 5 January 2015 by reviewer Revent, who confirmed that it was available there under the stated license on that date.

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Date/TimeThumbnailDimensionsUserComment
current08:17, 22 December 20142 min 17 s, 480 × 360 (4.51 MB)Stefan Elfving (WMSE) (talk | contribs)Imported from http://www.youtube.com/watch?v=vTvZg9mh70U

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Transcode status

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Format Bitrate Download Status Encode time
VP9 360P 216 kbps Completed 16:39, 23 October 2018 1 min 10 s
Streaming 360p (VP9) Not ready Unknown status
VP9 240P 168 kbps Completed 16:39, 23 October 2018 1 min 6 s
Streaming 240p (VP9) 69 kbps Completed 19:04, 20 December 2023 1.0 s
WebM 360P 541 kbps Completed 08:19, 22 December 2014 2 min 23 s
Streaming 144p (MJPEG) 874 kbps Completed 06:19, 10 November 2023 4.0 s
Stereo (Opus) 78 kbps Completed 19:11, 9 November 2023 3.0 s
Stereo (MP3) 128 kbps Completed 19:12, 9 November 2023 3.0 s
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