balance the following Cu + HNO3 >Cu(NO3)2+H2
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Answered by
7
Answer:
Cu→Cu
2+
+2e
−
⟶(1)
NO
3
−
+4H
+
+3e
−
⟶NO+2H
2
O⟶(2)
Equation (1) ×3+ Equation (2) ×2 (for equalising electrons)
3Cu⟶3Cu
2+
+6e
−
2NO
3
−
+8H
+
+6e
−
⟶2NO+4H
2
O
___________________________________
3Cu+2NO
3
−
+8H
+
⟶3Cu
2+
+2NO+4H
2
O
But 8H
+
+8NO
3
−
⟶8HNO
3
The 6 NO
3
2−
combine with Cu
2+
∴ Balanced equation is,
3Cu+8HNO
3
⟶3Cu(NO
3
)
2
+2NO+4H
2
O
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