Balance the following reaction:

Question: Balance the given Reaction:
Cu + HNO₃⟶Cu(NO₃)₂+NO+H₂O

Solution:

Now,

Cu⟶Cu²⁺+ 2e^-.......(1)
NO₃^-+4H⁺+3e^-⟶NO + 2H₂O .......(2)
Equation (1) × 3 + Equation (2) × 2 (for equalizing electrons)
3Cu⟶3Cu²⁺+6e^-
2NO₃^-+ 8H ⁺ + 6e^-⟶2NO+4H₂O

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3Cu+2NO₃^- + 8H⁺⟶3Cu²⁺ + 2NO + 4H₂O
But 8H⁺ + 8NO₃^- ⟶ 8HNO₃
The 6NO₃^2- combine with Cu²⁺
∴ Balanced equation is,
3Cu+8HNO₃⟶3Cu(NO₃)₂+2NO+4H₂O