a)3MgCl2+2Na3PO4--->Mg3(PO4)2(strzałka w dół)+6NaCl
3Mg2+ +6Cl- +6Na+ +3PO4 3- --->Mg3(PO4)2+6Na+ +6Cl-
3Mg2+ +3PO4 3- --->Mg3(PO4)2
b)2Na+2HNO3--->2NaNO3+H2
2Na +2H+ +2NO3- --->2Na+ +2NO3- +H2
2Na +2H+ --->2Na+ H2
c)3NaOH+H3PO4--->Na3PO4+3H2O
3Na+ +3OH- +3H+ +PO4 3- --->3Na+ +PO4 3- +3H2O
3OH- +3H+ --->3H2O
OH- +H+ --->H2O
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a)3MgCl2+2Na3PO4--->Mg3(PO4)2(strzałka w dół)+6NaCl
3Mg2+ +6Cl- +6Na+ +3PO4 3- --->Mg3(PO4)2+6Na+ +6Cl-
3Mg2+ +3PO4 3- --->Mg3(PO4)2
b)2Na+2HNO3--->2NaNO3+H2
2Na +2H+ +2NO3- --->2Na+ +2NO3- +H2
2Na +2H+ --->2Na+ H2
c)3NaOH+H3PO4--->Na3PO4+3H2O
3Na+ +3OH- +3H+ +PO4 3- --->3Na+ +PO4 3- +3H2O
3OH- +3H+ --->3H2O
OH- +H+ --->H2O