Making anhydrous sodium sulfate (Na2SO4)

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In this video you will learn how to make sodium sulfate (Na2SO4) from sulfuric acid (H2SO4).

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Sodium sulfate actually has a weird solubility vs temperature behaviour. Besides having lower solubility below room temperature it also has lower solubility near the boiling temperature of water.

chemicalmaster

I know this is a older post but im going to share my story any ways for safety reasons.
I had cleaned some drain cleaner sulfuric acid with hydrogen peroxide.i watched that procedure on a nerd rage video i believe.i was left with a almost about 60/40 sulfuric/h2o2 solution thats been sitting on a shelf for awhile.
Ended up coming across this video and figured that solution would be awesome to use in this reaction where its already deluted.
Well i decided i was going to double this reaction 112ml sulfuric and 160g sodium hydroxide.i end up using 150ml h20 so make a solution of the s.hydroxide.beaker in a ice bath already i proceeded to pour a little bit of the 120ml sulfuric acid into the hydroxide solution and ya the second the first drop hit the entire content of the beaker exploded every where covering myself and my work space in this concoction.
Thank fn god i had for whatever reason decided to put on a tyvax suit and my respirator.i almost didn't wear any of it because things went so smoothly in this video.
Let this post be a warning to always ALWAYS wear safety gear when learning/working with any reactions.i really almost covered myself with acids and base.my suits was literally dripping and i have a good feeling when i go back in there itll be partly decomposed.
Im not sure if this happened because of the sulfuric wasn't deluted enough or if it was because there was peroxide in it.i figured the sodium hydroxide would destroy the h2o2 like when storing ethyl acetate over sodium hydroxide.
Morale of the story even if it seems silly never ever attempt to do any reactions without proper safety protocols

ericami

At least in my experience I always added the base to the acid which implies sodium bisulfate is produced first. Maybe its my reagents but there has always been a very small but noticeable color change when the bisulfate converts to sulfate.

midwestchem

Nice prep! I love reactions like this.

BackYardScience

Interested to see what you've got planned for the Sodium Sulphate as I thought it wasn't very useful.

hanleypc

Could the anhydrous sodium sulphate be distilled with potassium nitrate to easily produce red fuming nitric acid?

Or can it only be done with sodium bisulphate? 🤔

Tom

SodiumInteresting

Little confused, 250 degrees centigrade in an oven or what? You're gonna have to excuse me, I have not slept in about 3 days now cause just found out I have Lukemia so I've been noticing that my attention span is all over the place, so pardon me!😊

Angrychemist-gx