Question

Scrie ecuatiile reactiilor cu ajutorul carora se pot realiza transformarile:
a) H2 -> HCl -> MgCl2
b) H2 -> H2O -> Ca(OH)2
C) H2SO4 -> H2 -> HBr -> MgBr2
Scrie si egaleaza ecuatiile reactiilor incluse in schema:
O2 -> c
+
H2 + Cl2 -> a + Na -> b + H2
+
CuO -> d + e

Answer 1

H2+Cl2---> 2HCl

Mg + 2HCl---> MgCl2 +H2

H2 + 1/2O2--> H2O

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

H2SO4---> H2O+SO3

2H2O---> 2H2+O2

H2+Br2---> 2HBr

Mg + 2HBr---> MgBr2 +H2

O2---> ?

H2+ Cl2---> 2HCl

2HCl +2 Na---> 2NaCl +H2

2CuO---> 2Cu + O2