Answer:
Explanation:
1) ZnBr₂ (aq) + AgNO₃ (aq)
Chemical equation:
ZnBr₂ (aq) + AgNO₃ (aq) →Zn(NO₃)₂(aq) + AgBr(s)
Balanced chemical equation:
ZnBr₂ (aq) + 2AgNO₃ (aq) →Zn(NO₃)₂(aq) + 2AgBr(s)
Ionic equation:
Zn²⁺(aq) + Br₂²⁻ (aq) + 2Ag⁺ (aq)+ 2NO⁻₃ (aq) → Zn²⁺(aq) +(NO₃)₂²⁻(aq) + 2AgBr(s)
Net ionic equation:
Br₂²⁻ (aq) + 2Ag⁺ (aq) → 2AgBr(s)
The Zn²⁺((aq) and NO⁻₃ (aq) are spectator ions that's why these are not written in net ionic equation. The AgBr can not be splitted into ions because it is present in solid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
2) HgCl₂ (aq) + KI (aq) →
Chemical equation:
HgCl₂ (aq) + KI (aq) → KCl + HgI₂
Balanced chemical equation:
HgCl₂ (aq) + 2KI (aq) → 2KCl(aq) + HgI₂(s)
Ionic equation:
Hg²⁺(aq) + Cl₂²⁻ (aq) + 2K⁺(aq) + 2I⁻ (aq) → HgI₂ (s) + 2K⁺(aq) + 2Cl⁻ (aq)
Net ionic equation:
Hg²⁺(aq) + 2I⁻ (aq) → HgI₂ (s)
The Cl⁻ ((aq) and K⁺ (aq) are spectator ions that's why these are not written in net ionic equation. The HgI₂ (s) can not be splitted into ions because it is present in solid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
3) Ca(OH)₂ (aq) + Na₂SO₄ (aq)
Chemical equation:
Ca(OH)₂ (aq) + Na₂SO₄ (aq) → CaSO₄(s) + NaOH(aq)
Balanced chemical equation:
Ca(OH)₂ (aq) + Na₂SO₄ (aq) → CaSO₄(s) + 2NaOH(aq)
Ionic equation:
Ca²⁺(aq) + OH₂²⁻ (aq) + 2Na⁺(aq) + SO₄²⁻ (aq) → CaSO₄(s) + 2Na⁺(aq) + 2OH⁻ (aq)
Net ionic equation:
Ca²⁺(aq) + SO₄²⁻ (aq) → CaSO₄(s)
The OH⁻ ((aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation. The CaSO₄ can not be splitted into ions because it is present in solid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
