Answer
(a) CuCl$_{2}$(aq) + Na$_{2}$S(aq) →CuS + 2 NaCl
Cl$^{-}$ + Na$_{+}$ → NaCl
(b) MgBr$_{2}$(aq) + K$_{2}$CO$_{3}$ (aq) → KBr + MgCO$_{3}$
Mg$^{2+}$ + CO$^{2-}$ → MgCO$_{3}$
(c) BaCl$_{2}$ (aq) + K$_{2}$SO$_{4}$ (aq) → KCl + BaSO$_{4}$
Cl$^{-}$ + K$^{+}$ → KCl
(d) Hg$_{2}$ (NO$_{3}$)$_{2}$ (aq) + KCl(aq) → KNO$_{3}$ + Hg$_{2}$Cl$_{2}$
(NO$_{3}$)$^{-}$ + K$^{+}$ → KNO$_{3}$
Work Step by Step
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