Make Sulfuric Acid (metabisulfite/oxidizer Method)





Introduction: Make Sulfuric Acid (metabisulfite/oxidizer Method)

We make concentrated sulfuric acid from sodium metabisulfite, hydrochloric acid and an oxidant such as hydrogen peroxide or nitric acid.

Warning: The procedures in this video produce large quantities of toxic gases and deal with highly corrosive acids. All work must be performed in a fume hood with proper safety equipment. And all apparatus must be glass to withstand the acids.

Sodium metabisulfite upon reaction with acid will generate sulfur dioxide. This provides a convenient source of sulfur dioxide that is easier to handle than burning sulfur.

But it is acceptable if you want to go that route. You'll just need to build a sophisticated gas capture and scrubbing system so the sulfur vapors and soot don't clog your tubes, poison your air and possibly burn down your workspace.

Sulfur dioxide is converted into sulfuric acid by reacting it with an oxidizer in water. In this case either hydrogen peroxide or nitric acid.

Industrially, sulfur dioxide is reacted with oxygen over a catalyst to make sulfur trioxide. This is cheaper but extremely difficult to do safely for the home chemist so the metabisulfite/oxidizer method is used instead.

You may use potassium metabisulfite instead of sodium metabisulfite. Both are used by home brewers to sterilize winemaking and beermaking mixtures. It's also used for homemade dyeing processes. Therefore it is very easy to obtain the metabisulfites without the need for expensive shipping fees or licenses.

The oxidizers must be present for this reaction to work. You cannot simply use water or you'll just make sulfurous acid which decomposes on heating and is useless for the reactions that sulfuric acid is intended for.

In future videos, we may show other methods of sulfuric acid production including sulfur trioxide based methods so please subscribe!

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    I meant adding the sulfuric acid to 10% H202 to clean it and boil it.

    is it tru you could make hydrochloric acid from vinigar and salt?

    Yes, salt with vinegar does make a very, and I men very weak form of Hydrochorric acid. That is why it is a more efficient cleaner then vinegar alone... However I have not heard of a way to actually produce practical amount of concentrated Hydrochloric acid by doing this, even via electrolysis...

    you can make hydrochloric acid by mixing baking soda and regular salt in the right quantity. then heat that mixture and lead the gasses throug water. the water will become your hydrochloric acid

    Nurdrage, i just wondering. Can we make commonly sulfuric acid from "sulfuric acid anhydrous" and hydrogen peroxide, is it possible?

    does the concentration method portrayed in this video also work for HCL?

    To NurdRage Wow, a great job for home chemist. Could we use sodium sulphate instead of the metabisulfite?

    That doesn't produce sulfur dioxide. So it wouldn't work. Metabisulfite is very easy to get and there are no restrictions on it. So i don't see why you wouldn't use it.

    "Why..?" You ask..? Because in the pursuit of science their is no set course to be followed... That is the fun part!! :D

    you can get sodium metabisulfid from any winery.