[kemistry]

My teacher asked us to make a home made chemical equilibrium experiment... Hopefully with home made stuff, I dont wan't to buy anything, just with stuff found in your house, and it has to show chemical equilibrium, please

[Borek]

What reactions exhibiting equilibrium do you know?

[kemistry]

I don't know, but can I somehow achieve equilibrium while putting an efervescent Tablet in a glass of wáter? or anything, please

[Arkcon]

I don't think that's a good choice.  Look up the textbook definition of equilibrium.  Can you write a chemical reaction, for effervescent tablets, that will contain the symbol: 

[Vidya]

I don't know, but can I somehow achieve equilibrium while putting an efervescent Tablet in a glass of wáter? or anything, please

Your teacher is asking you write an equilibrium from home made stuff...so when you add an effervescent tablet check what is left in the solution after effervescence of gas.