The Chloralkali Process (How To Make Sodium Hydroxide And Chlorine)

I put together a small chloralkali cell to demonstrate the working principle of the industrial process for generating sodium hydroxide and chlorine.
After seeing a few sources online which seemed to oversimplify this chloralkali process, I was prompted to make my own video on the topic, simply because I think the process is very interesting.

Cody'slab has also made a couple of excellent videos on the topic, which specifically describe the mercury cell design (which I only briefly mentioned):

Also, if you're interested, I also have a video about generating sodium chlorate from regular sodium chloride, which is a very similar process to the one described in this video:

[manjulamachar]

You are a million times more helpful than Google...

[area]

I had great success using cotton balls as a filter membrane and a 30 watt solar panel. Most excellent series!

[randominternetbro]

This is a MUCH better explanation of the actual concepts behind the chloralkali process than anything else I've seen in just youtube videos. Amazing work.

[squirlboy]

Have you ever thought about making a text book? You do a very good job explaining and teaching. It's hard for me to follow along with a lot of other people and I personally follow along with what you say quite well. Thank you

[firstmkb]

Fantastic! Now I have something I can build with some confidence that it won't fall apart.

[kifayatUllah]

Awesome. I had also thought and experimented before but I got to know that it makes bleach instead of NaOH. So then i used two separate cells and it generated sodium hydroxide very nicely. Thanks so much bro. Now I know what is really happening during the electrolysis.

[techtack]

i am from India i saw this video i am to understand this activity in my ncert class 10 book....
thank you.
Shaandeep Singh (Techno Trigger).

[hrajabi]

Absolutely great you answered many question in my head, thanks

[alzoha]

I am here for chlor alkali process then i found that amazing experiments and i just click the subscribe button

[yasyasmarangoz]

I've subscribed your channel, it's pretty cool!
Please make more videos.

[christinley]

Realy informative!!!! Thank you!! Having a hard time understanding neutralizing the chlorine gas?

[josephsekavec]

Helpful video, I was thinking of using this process to generate KOH.

Two questions: are you in NZ?
Where did you find the little alligator clips?

[geeljireoomaar]

Thanks Herry! I always learn a lot from your videos.

[trofaznimotor]

I have few questions but before i aske them i wanna really to thank you alot for making such clear video:1.Why we dont pour brine in both sides, i mean it will improve conductivity?shouldnt chlorine ion pass trough membrane just like sodium ion?2nd question is:how you protect your copper electrode, shouldnt it react with formed NaOH?

[magicponyrides]

Great video. Any plans to combine the H2 and Cl2 into HCL?

[timothyknoefler]

This is just what I was looking for!👍. Thanks

[Kevin-jzbg]

The fourth anode option is stainless steel, but at high currents it tends to oxidize as well.
You can use stainless steel wool for both electrodes (like the kind in dish scrubbers) because it has a lot of surface area, and same current/larger surface area = less corrosion.

[SetTheCurve]

Can you please make a video showing what occurs what you apply a current to typical hydroponic nutrient?

[geeljireoomaar]

I think Herry it is time you write a book. I will be the first to order. Look how many followers you have
Thanks

[mikegLXIVMM]

29:16
I used this method to generate chlorine.
To do this, I cut some Plexiglas into a circle so that it would fit about 1 CM below the top of the clay pot.
I drilled a hole in the center of the Plexiglas to fit a carbon rod.
Also a hole to place a small gas fitting and sealed the whole thing with electrician's putty.
The chlorine was dried with some calcium chloride in a glass tube.
In the pot, was very concentrated salt solution.