Test for Nitrate Ions using aluminium

[@a-levelchemistry6308]

The litmus turns blue because you're pushing it down the test tube where you just added NaOH.This is why it is the sides of the paper that turn blue. The litmus should be at the top of the tube.

[@Try_my_age]

Wow❤️❤️❤️❤️❤️thank you you're so pretty 🤭

[@chitsanzompasu5611]

Thank you soo much .. God bless 0:26

[@alimo166]

What's the role of Al here?

[@thasarathkandathasan372]

Aluminium is the reducing agent for Nitrate ion(Reduces it to ammonia)

[@MB99murchoono]

Nice explanation. I am from India

[@Lamplovr]

No one gives a shi abt where ure from brodhi ☠️☠️🙏

[@MB99murchoono]

U are soo dumb 🤡

[@eliminatorjr]

shouldn't this reaction be incredibly exothermic? why does heat need to be added

[@ChemJungle]

I actually can't find any data for the energy changes associated with this reaction - but yes I'd assume it was somewhat exothermic. The heat is added to increase the number of particles with at least the activation energy aka to get the reaction going!

[@a-levelchemistry6308]

It is not a rapid reaction and the powder used here will be mostly aluminium oxide. The tube is usually warmed over a Bunsen. Warmed not heated.

[@JoeCrawford-t4z]

just becuase it's exothermic doesn't mean a reaction doesn't need to be heated. Burning wood is exothermic yet it doesn't just ignite spontaneously.

[@piyushpatel7167]

Pehle apna accent sudhar