Question

de aplicat legea conservati pentru urmatoarele ecuatii reactantilor chimici:

a)Ca + O² ->CaO
b)Zn + HCl ->ZnCl2+H2(sageata in sus)
c)Na + Cl2 -> NaCl
d)Al+Cl2 -> AlCl2
e)AgNo3 +CuCl2 ->AgCl(sageata in jos) + Cu(No3)2
f)Al(OH)3 -> Al2O3 -> H2o​

Answer 1

Răspuns:

a)2Ca + O2 ->2CaO

b)Zn + 2HCl ->ZnCl2+H2

c) 2Na + Cl2 -> 2NaCl

d)2Al+3Cl2 -> 2AlCl3

e)2AgNO3 +CuCl2 ->2AgCl+ Cu(NO3)2

f)2Al(OH)3 -> Al2O3 + 3H2O