Odpowiedzi

2010-04-08T16:39:32+02:00
1)H2S+2NaOH->Na2S+2H2O
2H+ +S2- +2Na+ +2OH- ->2Na+ S2- +2H2O
2H+ + 2OH- ->2H2O/:2
H+ +OH- ->H2O

2)H3PO4+3KOH->K3PO4+3H2O
3H+ + PO43- +3K+ +3OH- ->3K+ + PO43- +H2O
3H+ + 3OH- ->3H2O/:3
H+ + OH- ->H2O