Chemický rozklad
Chemický rozklad je chemická reakcia, pri ktorej z jedného zložitejšieho reaktantu vznikajú dva alebo viac jednoduchších produktov.
R ------- P1 + P2 +...
reaktant produkty
reaktant------produkt+produkt
Pokus k chem rozkladu:
Katalytický rozklad peroxidu vodíka
pomôcky:
skúmavka, stojan na skúmavky, špajle, zápalky
chemikálie:
10% roztok H2O2, pevný MnO2
postup:
Do skúmavky nalejte asi 1 ml peroxidu vodíka a pridajte na špičku malé lyžičky pevného bureli.
V skúmavke prebieha veľmi búrlivá reakcia katalytického rozkladu peroxidu vodíka - pomocou tlejúci špajle možno dokázať vznik kyslíka, špajle sa rozžhne.
princíp:
Peroxid vodíka sa rozkladá za katalýzy bureli (oxidu manganičitého) na vodu a kyslík.
Burel tu funguje ako katalyzátor - čo je látka, ktorá vstupuje do reakcie a vystupuje z nej nezmenená - dochádza k zníženiu aktivačná energia reakcie.
využitie:
kinetika - vplyv katalyzátora; vodík, kyslík a ich zlúčeniny - dôkaz kyslíka
Typ pokusu:
demonštračné aj laboratórne - pod dohľadom učiteľa
bezpečnosť:
nepotřísnit sa peroxidom vodíka, reakcia je búrlivá - vykonávať pod dohľadom učiteľa
Časová náročnosť:
príprava - 5 minút, vlastné prevedenie - 5 minút
Tipy & triky:
- Rozklad peroxidu vodíka za katalýzy bureli prebieha veľmi búrlivo a dlho - kým sa nespotrebuje všetok peroxid vodíka - je teda lepšie použiť menšie množstvo, pokus aj cez to bude vidieť
- Po prípade použiť odmerný valec - ako v prípade videa z Internetové video-databázy chemických pokusov ZF JU
Komentáre
Prehľad komentárov
This is very interesting, You are an overly skilled blogger. I've joined your feed and sit up for looking for more of your wonderful post. Additionally, I've shared your site in my social networks tidig graviditet mensvärk quat.prizezwom.com/relaxation/tidig-graviditet-mensvaerk.php
online shopping sidor
(online shopping sidor, 17. 2. 2021 2:37)
Do you have a spam problem on this website; I also am a blogger, and I was wanting to know your situation; many of us have developed some nice practices and we are looking to exchange methods with others, be sure to shoot me an email if interested. online shopping sidor azad.sewomenpriz.com/beautiful-things/online-shopping-sidor.php
bekväma skor luleå
(bekväma skor luleå, 16. 2. 2021 14:44)
If you wish for to take a good deal from this post then you have to apply such strategies to your won weblog. bekväma skor luleå mings.sewomenpriz.com/news/bekvaema-skor-lule.php
luciaband 10 cm
(luciaband 10 cm, 16. 2. 2021 6:27)
What's up to every one, it's really a pleasant for me to visit this web site, it consists of priceless Information. luciaband 10 cm reidu.prizezwom.com/for-men/luciaband-10-cm.php
hjc hjälmar rea
(hjc hjälmar rea, 15. 2. 2021 16:45)
Howdy, I do believe your web site may be having web browser compatibility problems. Whenever I look at your site in Safari, it looks fine however, if opening in Internet Explorer, it has some overlapping issues. I simply wanted to give you a quick heads up! Aside from that, wonderful blog! hjc hjälmar rea mitt.sewomenpriz.com/travels/hjc-hjaelmar-rea.php
veet intim creme
(veet intim creme, 15. 2. 2021 8:05)
Usually I don't learn article on blogs, however I would like to say that this write-up very compelled me to take a look at and do it! Your writing taste has been surprised me. Thanks, very great article. veet intim creme avthe.prizezwom.com/trends/veet-intim-creme.php
köpa fälgar tyskland
(köpa fälgar tyskland, 15. 2. 2021 3:58)
Howdy! This is my first visit to your blog! We are a group of volunteers and starting a new project in a community in the same niche. Your blog provided us useful information to work on. You have done a wonderful job! köpa fälgar tyskland wommmewt.com/news/koepa-faelgar-tyskland.php
dålig blodcirkulation i benen nyttigt
(dålig blodcirkulation i benen nyttigt, 14. 2. 2021 12:42)
This is the perfect site for anybody who hopes to understand this topic. You know so much its almost tough to argue with you (not that I actually will need to…HaHa). You definitely put a new spin on a subject which has been discussed for ages. Great stuff, just excellent! dålig blodcirkulation i benen nyttigt afch.sewomenpriz.com/delicious-dishes/dlig-blodcirkulation-i-benen-nyttigt.php
causes of visible veins
(causes of visible veins, 14. 2. 2021 9:11)
Hi to every one, the contents existing at this site are really remarkable for people experience, well, keep up the good work fellows. causes of visible veins drear.prizezwom.com/advice-girlfriends/causes-of-visible-veins.php
staphylococcus aureus behandling
(staphylococcus aureus behandling, 13. 2. 2021 15:42)
Wow! In the end I got a website from where I know how to truly get useful data regarding my study and knowledge. staphylococcus aureus behandling kieli.wommmewt.com/news/staphylococcus-aureus-behandling.php
c vitaminrika bär
(c vitaminrika bär, 13. 2. 2021 10:27)
Since the admin of this website is working, no hesitation very shortly it will be well-known, due to its quality contents. c vitaminrika bär gimo.prizezwom.com/skin-care/c-vitaminrika-baer.php
mauvaise odeur pieds
(mauvaise odeur pieds, 13. 2. 2021 3:01)
This piece of writing presents clear idea in favor of the new viewers of blogging, that truly how to do running a blog. mauvaise odeur pieds dive.sewomenpriz.com/news/mauvaise-odeur-pieds.php
hur får man större testiklar
(hur får man större testiklar, 12. 2. 2021 14:46)
Hello mates, good piece of writing and good urging commented at this place, I am truly enjoying by these. hur får man större testiklar tawju.wommmewt.com/for-women/hur-fr-man-stoerre-testiklar.php
infection ongle pied
(infection ongle pied, 12. 2. 2021 1:57)
I'm not positive where you're getting your info, however great topic. I needs to spend a while studying much more or working out more. Thanks for fantastic information I used to be looking for this information for my mission. infection ongle pied reni.sewomenpriz.com/trends/infection-ongle-pied.php
bra mat för uppblåst mage
(bra mat för uppblåst mage, 11. 2. 2021 14:06)
It's not my first time to visit this website, i am browsing this web site dailly and take pleasant information from here every day. bra mat för uppblåst mage ophse.sewomenpriz.com/sport/bra-mat-foer-uppblst-mage.php
nyttiga recept vegetarisk
(nyttiga recept vegetarisk, 11. 2. 2021 1:50)
Hello there, I do believe your web site could possibly be having web browser compatibility issues. When I take a look at your website in Safari, it looks fine however, when opening in IE, it has some overlapping issues. I simply wanted to provide you with a quick heads up! Besides that, excellent site! nyttiga recept vegetarisk esiz.wommmewt.com/travels/nyttiga-recept-vegetarisk.php
afro hår produkter
(afro hår produkter, 10. 2. 2021 17:59)
Hey I know this is off topic but I was wondering if you knew of any widgets I could add to my blog that automatically tweet my newest twitter updates. I've been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with something like this. Please let me know if you run into anything. I truly enjoy reading your blog and I look forward to your new updates. afro hår produkter findse.prizezwom.com/for-men/afro-hr-produkter.php
jennys matblogg daim
(jennys matblogg daim, 10. 2. 2021 13:47)
I am extremely impressed with your writing skills and also with the layout on your weblog. Is this a paid theme or did you modify it yourself? Either way keep up the excellent quality writing, it is rare to see a nice blog like this one these days. jennys matblogg daim ralso.wommmewt.com/news/jennys-matblogg-daim.php
när försvinner mensen
(när försvinner mensen, 10. 2. 2021 1:14)
It's appropriate time to make some plans for the future and it is time to be happy. I've read this post and if I could I want to suggest you few interesting things or suggestions. Maybe you could write next articles referring to this article. I wish to read more things about it! när försvinner mensen reha.sewomenpriz.com/travels/naer-foersvinner-mensen.php
blödning efter menopaus
(blödning efter menopaus, 9. 2. 2021 10:36)
If you are going for most excellent contents like I do, just visit this website daily as it gives quality contents, thanks blödning efter menopaus inor.sewomenpriz.com/trends/bloedning-efter-menopaus.php
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60
tidig graviditet mensvärk
(tidig graviditet mensvärk, 17. 2. 2021 4:01)