To day, My aunt he's told me to show something, and he lift a breaker 100 mL with yellow solution and he heat it in few minute and he put iron nail 4" in it and wait for 3-5 Minute then he take

iron nail up form yellow solution and clean it with water then he can break it ? I can confirm the iron nail is real

 

My question : What solution be !? Aqua regia ? I think it is base on science please help me

Sounds like aqua regia or possibly nitric acid. Given how quickly it corroded the nail, I'm going with aqua regia.

It use about 3-5 Minute , Do you think aqua regia can change structure of iron nails, it not only corrode ?

I'm not 100%, but I would think that the nitric acid in the aqua regia is oxidising the iron, which then reacts with HCl to form the iron chloride salt.

I think too, but I test with my aqua regia with 3:1 HCl : HNO3 Commercial grade and wait 24 Hr For Emitted gas It's corrode but I can't break or crack

Could be that the nail was a different composition.

May be, But it's standard commercial nails I hope I'll get answer for this experimental soon thank you so much Hypervalent_iodine

No problems! (and be careful with the aqua regia)

Anybody know ? T^T

No problems! (and be careful with the aqua regia)

 

How I made yellow aqua regia at this moment It's very red = =" I used ratio 3:1 HCl : HNO3

To be honest, I'm not really experienced with the stuff. According to the wiki page, it's yellow or red, so I guess you're okay.

Edited October 1, 201114 yr by hypervalent_iodine

To be honest, I'm not really experienced with the stuff. According to the wiki page, it's yellow or red, so I guess you're okay.

 

Thank you so much

I've used it to clean ridiculously dirty glassware and it is usually red when fresh and yellows over time. Make it in small amounts and use it fresh.