Question

Дополните схемы уравнений реакций,напишите ионные уравнения в полном и сокращенном виде.
HNO3+Fe(OH)3
MgO+HCl
Zn+H2So4
CuBr2+NaOh

Answer 1

$3HNO_{3} + Fe(OH)_{3} = Fe(NO_{3})_{3} +3H_{2} O$
$3H ^+ + 3(NO_{3})^- + Fe ^{3+}+3OH^- = Fe^{3+} +3(NO_{3})^{-} +3H_{2} O$
$3H ^+ +3OH^- = 3H_{2} O$

$MgO +2HCl = MgCl_{2} + H_{2}O$
$Mg^{2+} +O ^{2-} +2H ^{+}+2Cl ^{-} = Mg^{2+} + 2Cl^{-} + H_{2}O$
$O ^{2-} +2H ^{+} =H_{2}O$

$Zn + H_{2} SO_{4} = ZnSO_{4} + H_{2}$
$Zn ^{0} + 2H ^{+} +SO_{4} ^{2-} = Zn ^{2+} + SO_{4}^{2-} + H_{2} ^{0}$
$Zn ^{0} + 2H ^{+} = Zn ^{2+}+H_{2} ^{0}$

$CuBr_{2} + 2NaOH = Cu(OH)_{2} + 2NaBr$
$Cu^{2+} +2Br^{-} + 2Na^+ + 2OH^- = Cu(OH)_{2} + 2Na^++2Br^{-}$
$Cu^{2+} + 2OH^- = Cu(OH)_{2}$