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200 g sol de acid acetic concentratie 40% reactioneaza cu carbonat de calciu.
Scrie ecuatia reactiei chimice si calculeaza volumul de CO2 obtinut


Răspuns :

c=40%
ms=200g ⇒ md= c*ms/100=40*200/100=80g acid acetic
2CH₃-COOH+ CaCO₃ =(CH₃COO)₂Ca +CO₂ +H₂O

2*60/80= 22,4L *x
x=80*22,4/120
x=14,93 L