Stabileste coeficientii urmatoarelor ecuatii chimice:
1.Mg+O2-->MgO
2.H2+I2-->HI
3.NaOH+AlCl3-->Al(OH)3 o sageata in jos+NaCl
4.NaHCO3-->pe sageata scrie "t Grade" Na2CO3 o sageata in sus+H2O
5.Fe+HCl-->FeCl2+H2 o sageata in sus
6.KOH+H3PO4-->K3PO4+H2O
7.CaO+H2O-->Ca(OH)2

Va rog ajutati-ma ca nu stiu. :o3

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Răspunsuri

2014-05-04T13:52:48+03:00
2Mg+O2-->2 MgO
H2+I2-->2HI
3NaOH+AlCl3--> Al(OH)3+3NaCl
2NaHCO3-->NaCO3+H2O
Fe+2HCl-->FeCl2 +H2
3KOH+ H3PO4--> K3PO4+3H2O
CaO+H2O-->Ca(OH)2
unde e pe sageata t grade reactia are loc in conditii de temoeratura 
unde ai sageata sus se evapora produsul, iar sageata in jos se depune produsul