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
Pretty nice post. I just stumbled upon your blog and wished to say that I've truly enjoyed surfing around your blog posts. After all I'll be subscribing to your feed and I hope you write again soon! otertbe.se/map30.php när försvinner gravidmagen
hur mГҐnga kalorier innehГҐller en flaska vin naoblal.se
(naoblal.se, 10. 10. 2020 13:03)
What's up, this weekend is pleasant in favor of me, as this occasion i am reading this enormous informative post here at my house. nessr.naoblal.se/beautiful-things/hur-mnga-kalorier-innehller-en-flaska-vin.php hur mГҐnga kalorier innehГҐller en flaska vin
kapselbildning efter bröstförstoring naoblal.se
(naoblal.se, 10. 10. 2020 3:39)
Hello there! Do you know if they make any plugins to assist with Search Engine Optimization? I'm trying to get my blog to rank for some targeted keywords but I'm not seeing very good gains. If you know of any please share. Thank you! saufe.naoblal.se/for-women/kapselbildning-efter-broestfoerstoring.php kapselbildning efter bröstförstoring
varm sГҐs till fiskpinnar naoblal.se
(naoblal.se, 9. 10. 2020 10:05)
I know this if off topic but I'm looking into starting my own weblog and was curious what all is needed to get setup? I'm assuming having a blog like yours would cost a pretty penny? I'm not very internet savvy so I'm not 100% certain. Any tips or advice would be greatly appreciated. Thank you birksl.naoblal.se/skin-care/varm-ss-till-fiskpinnar.php varm sГҐs till fiskpinnar
bröd oliver soltorkade tomater naoblal.se
(naoblal.se, 9. 10. 2020 0:48)
constantly i used to read smaller articles or reviews which also clear their motive, and that is also happening with this post which I am reading at this place. beucler.naoblal.se/news/broed-oliver-soltorkade-tomater.php bröd oliver soltorkade tomater
gГҐ ner i vikt amma infoforwomen.be
(infoforwomen.be, 4. 10. 2020 20:18)
Hmm is anyone else experiencing problems with the pictures on this blog loading? I'm trying to find out if its a problem on my end or if it's the blog. Any responses would be greatly appreciated. liese.infoforwomen.be/map12.php gГҐ ner i vikt amma
XRumer 19.0 + XEvil bypass ReCaptcha-2 and ReCaptcha-3
(NatashaJag8976, 18. 8. 2020 1:12)
Incredible update of captcha solving software "XRumer 19.0 + XEvil":
Captcha regignizing of Google (ReCaptcha-2 and ReCaptcha-3), Facebook, BitFinex, Bing, Hotmail, SolveMedia, Yandex,
and more than 12000 another subtypes of captchas,
with highest precision (80..100%) and highest speed (100 img per second).
You can use XEvil 5.0 with any most popular SEO/SMM software: iMacros, XRumer, SERP Parser, GSA SER, RankerX, ZennoPoster, Scrapebox, Senuke, FaucetCollector and more than 100 of other software.
Interested? There are a lot of introducing videos about XEvil in YouTube.
FREE DEMO AVAILABLE!
See you later ;)
Thank you very much for the invitation
(Mixnug, 1. 8. 2020 8:09)
Thank you very much for the invitation :). Best wishes.
PS: How are you? I am from France :)
Are you 18? Come in and don't be shy!
(Allenned, 26. 7. 2020 4:13)Hurry up to look into loveawake.ru you will find a lot of interesting things
Rassismus-Skandal an Berliner Rossmann-Kasse
(MoonLlama, 1. 7. 2020 13:33)
Sie sollten diesen Artikel lesen. Es ist wichtig!1(A#D5gt8x6!WGIHAzum
Rassismus bei Rossmann: schwarzer Kundin wird Kartenbetrug vorgeworfen, weil der Name darauf deutsch ist. Polizei droht ihr vor ihrem Kind mit Gefängnis: “Sprechen Sie überhaupt deutsch? Deutsche Sprache, schwere Sprache.”
https://www.bz-berlin.de/berlin/charlottenburg-wilmersdorf/rassismus-skandal-an-berliner-rossmann-kasse - https://www.bz-berlin.de/berlin/charlottenburg-wilmersdorf/rassismus-skandal-an-berliner-rossmann-kasse
Hi! Only from 18+!
(SandraWat, 11. 6. 2020 1:55)Hurry up to look into loveawake.ru you will find a lot of interesting things....
Графики распространения коронавируса
(Donaldpog, 19. 5. 2020 17:54)Графики распространения коронавируса https://coronavirus-poslednee.ru/koronavirus-poslednie-novosti-i-karta-v-gvinee-bisau.html
zbeldfpqxjrj
(ptmnzryf, 3. 5. 2020 2:16)online chemist australia viagra https://menviagraus.com/ - viagra generico prezzo farmacia effetti viagra sulle donne
Графики заболеваний коронавируса
(DavidSpite, 2. 5. 2020 2:22)Карта заражений коронавируса https://coronavirus-novosti.info/poslednie-novosti-i-statistika-na-karte-v-khorvatii.html
gnefdcswoiqx
(dhaderlp, 1. 5. 2020 9:42)acheter du viagra livraison rapide https://menviagraget.com - indian generic viagra safe danger d'acheter du viagra sur internet tumblr viagra effects
Онлайн мониторинг заболеваний коронавируса
(PatrickLeday, 21. 4. 2020 9:12)Мониторинг заражений коронавируса https://coronavirus-monitorin.ru/simptomy-koronavirusa.html
Independent Reviews about Currency Brokers
(Forexlank, 22. 3. 2020 11:36)https://currency-trading-brokers.com/forex-comparisons-ratings-reviews-latvia.html Neatkarīgas komentāri-atzinumi-piezīmes apmēram ārvalstu-ārzemju maiņas-apmaiņas brokeriem-mākleriem.
forex trading foreign exchange
(Forexpreara, 7. 3. 2020 1:19)
forex peace army go markets https://currency-trading-brokers.com/forex-comparisons-ratings-reviews-united-kingdom-australia-new-zealand.html
Bob Casino
(AlbertoKnize, 26. 12. 2019 2:33)Боб казино официальный сайт - https://bob-casino.xyz/
https://frozen2hdmovie.com
(frozen2hdmovie, 18. 12. 2019 6:06)
I like viewing web sites which comprehend the price of delivering the excellent useful resource free of charge. I truly adored reading your posting. Thank you!
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
https://frozen2hdmovie.com
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 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85
otertbe.se
(otertbe.se, 11. 10. 2020 3:22)