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Happy41
a fost răspuns

Completati reactiile:
1.Al+S -->...........
2.Ca+.........--->Ca (OH)2+H2
3.NaOH+........-->Na2SO4+H2O
4.SO4+....-->SO3
5.H2O+......-->KOH

Dau coroană!

Răspuns :

Grigore2018
2Al+3S-----.Al2S3

Ca+2H2O---->Ca(OH)2+H2

2NaOH+H2SO4----->Na2SO4+2H2O

2SO2+O2----->2SO3   

H2O+K2O---->2KOH

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