Hemijske jednacine

Submitted by Gliga97 on Wed, 02/05/2014 - 10:08
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Predstavi jonskim jednacinama reakcije:

1)HCl + Na2S

2)BaCl2+H2SO4

3)ZnSO4+(NH4)2S

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milicaradenkovic - Wed, 02/05/2014 - 11:51

1) 2HCl+Na2S-------------->2NaCl+H2S

H+ + Cl- + 2Na+ + S2- -------------------->2Na+ + 2Cl- + H2S

2) BaCl2+ H2SO4--------------->2HCl+BaSO4

Ba2+ + 2Cl-+2H+ + SO42- ---------------->BaSO4+ 2H+ + 2Cl-

3) ZnSO4+(NH4)2S----------------->ZnS+(NH4)2SO4

Zn2+ + SO42-+ 2NH4+ + S2- ----------------->ZnS+2NH4+ + SO42-