Потенциал каломельного электрода

30 июля 2015г. - 16:19 3138 просмотров


Потенциал каломельного электродаПриготовить водородный электрод достаточно трудно, да и пользоваться им также затруднительно в обычной среде. Для осуществления калибровки электродов лучше всего отдавать предпочтение каломельному электроду, поскольку он является вторичным электродом сравнения.

Что такое каломель?

Каломелью является хлорид ртути (I), представленный формулой Hg2Cl2. На каломельном электроде, как правило, всегда осуществляются полуреакции.

Он входит в состав насыщенного раствора KCl, что позволяет оформить схему по такой формуле:

Hg2Cl2(TB.), Hg(ж.) | Сl-(насыщ.)


Уже давно известны все значения потенциала каломельного электрода и все они максимально точны даже в условиях изменения концентрации и температуры. В том случае, если раствор хлорида калия составляет I моль/дм3, потенциал будет в свою очередь составлять +0,2812 В. Если применен более насыщенный раствор, то это число измениться на + 0,2415 В.

Схема каломельного электрода
Каломельный электрод включает в себя платиновую проволоку, погруженную в небольшую каплю ртути. Та в свою очередь погружена в раствор хлорида калия.

Уравнения окислительно-восстановительных процессов в нём может быть разнообразными.

Вот некоторые из них:

Формула окислительно-восстановительного процесса
Уравнение Нернста:

Уравнение Нернста
Достоинство

Во-первых, в отличной воспроизводимости самого потенциала. Возможность работать в рабочей среде с температурой, достигающей 80 градусов. Если температура зашкаливает, то каломель разлагается. Однако, каломель сейчас редка в применении, поскольку в ней содержится токсичная ртуть.


Читайте также на портале myfta.ru:

Комментарии (15) “Потенциал каломельного электрода”

  1. Thankfulness to my father who told me on the topic of this website, this webpage is in fact
    awesome.

  2. here:

    I simply want to mention I am new to blogging and seriously loved your blog site. Likely I’m want to bookmark your website . You definitely come with terrific well written articles. With thanks for sharing with us your web-site.

  3. I’ve read several good stuff here. Definitely worth bookmarking for revisiting. I wonder how much effort you put to make such a magnificent informative site.

  4. Very interesting information!Perfect just what I was searching for!

  5. Wow! This can be one particular of the most beneficial blogs We have ever arrive across on this subject. Basically Excellent. I’m also a specialist in this topic so I can understand your effort.

  6. I’ll immediately seize your rss feed as I can not find your email subscription hyperlink or e-newsletter service. Do you have any? Kindly permit me recognise so that I could subscribe. Thanks.

  7. Thanks for your fascinating article. One other problem is that mesothelioma is generally caused by the breathing of material from mesothelioma, which is a extremely dangerous material. It really is commonly viewed among personnel in the building industry who definitely have long contact with asbestos. It’s also caused by moving into asbestos protected buildings for a long period of time, Genetics plays a crucial role, and some people are more vulnerable for the risk as compared to others.

  8. Aw, this was a very nice post. In idea I wish to put in writing like this moreover – taking time and actual effort to make an excellent article… however what can I say… I procrastinate alot and on no account seem to get something done.

  9. obviously like your web site however you have to take a look at the spelling on quite a few of your posts. Several of them are rife with spelling issues and I find it very troublesome to tell the reality however I will surely come back again.

  10. I believe this is among the such a lot significant info for me. And i’m satisfied studying your article. But should remark on few common things, The website taste is ideal, the articles is in reality nice : D. Good activity, cheers

  11. Someone essentially help to make seriously articles I would state. This is the first time I frequented your website page and thus far? I amazed with the research you made to create this particular publish incredible. Magnificent job!

  12. Hey! I’m at work browsing your blog from my new iphone! Just wanted to say I love reading through your blog and look forward to all your posts! Carry on the fantastic work!

  13. Thanks for this article. I’d also like to mention that it can possibly be hard if you find yourself in school and just starting out to initiate a long credit history. There are many college students who are simply trying to make it and have a lengthy or positive credit history can sometimes be a difficult issue to have.

  14. I’m really enjoying the design and layout of your site. It’s a very easy on the eyes which makes it much more pleasant for me to come here and visit more often. Did you hire out a developer to create your theme? Superb work!

  15. I believe that avoiding highly processed foods would be the first step to lose weight. They can taste beneficial, but prepared foods include very little vitamins and minerals, making you consume more simply to have enough strength to get throughout the day. For anyone who is constantly ingesting these foods, switching to whole grain products and other complex carbohydrates will help you have more vitality while consuming less. Thanks alot : ) for your blog post.

Добавить комментарий

Ваш e-mail не будет опубликован. Обязательные поля помечены *

восемнадцать + 18 =