Fe(NO3)3 + MgO Fe2O3 + Mg(NO3)2 .(NH4)3N + Cr(CrO4)2 = (NH4)2Cr04 + _Cr3N4 7.) Cu3(PO4)2 + Na2SO4 Na3PO4 + CuSO4 8.) AICI + H20 Al(OH)3 + HCI
Balance the following chemical equations
The Correct Answer and Explanation is :
Here are the balanced chemical equations:
- Iron(III) Nitrate and Magnesium Oxide Reaction
[
2Fe(NO_3)_3 + 3MgO → Fe_2O_3 + 3Mg(NO_3)_2
] - Ammonium Nitride and Chromium Chromate Reaction
[
(NH_4)_3N + 2Cr(CrO_4)_2 → 3(NH_4)_2CrO_4 + Cr_3N_4
] - Copper(II) Phosphate and Sodium Sulfate Reaction
[
Cu_3(PO_4)_2 + 3Na_2SO_4 → 2Na_3PO_4 + 3CuSO_4
] - Aluminum Chloride and Water Reaction
[
AlCl_3 + 3H_2O → Al(OH)_3 + 3HCl
]
Explanation:
Balancing chemical equations ensures that the law of conservation of mass is followed, meaning the number of atoms of each element is the same on both sides of the reaction.
- First Reaction: Fe(NO₃)₃ + MgO
- Iron(III) nitrate reacts with magnesium oxide to form iron(III) oxide and magnesium nitrate.
- Each side must have the same number of Fe, NO₃, Mg, and O atoms.
- Balancing Fe, NO₃, and Mg requires a 2:3:1:3 ratio.
- Second Reaction: (NH₄)₃N + Cr(CrO₄)₂
- The ammonium nitride reacts with chromium chromate to form ammonium chromate and chromium nitride.
- The coefficient 2 before Cr(CrO₄)₂ ensures equal Cr atoms on both sides.
- The nitrogen atoms must also balance.
- Third Reaction: Cu₃(PO₄)₂ + Na₂SO₄
- Copper(II) phosphate reacts with sodium sulfate to form sodium phosphate and copper sulfate.
- Sodium and phosphate ions are balanced with a 3:2 ratio.
- Fourth Reaction: AlCl₃ + H₂O
- Aluminum chloride reacts with water to form aluminum hydroxide and hydrochloric acid.
- The reaction follows a 1:3:1:3 ratio to balance the Cl and OH groups.
These steps ensure mass balance and charge neutrality, making the equations chemically correct.