Which of the following chemical equations represents a balanced chemical equation?

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2Zn + AgNO₃ → 2Zn (NO₃)₂ + Ag

BaCl₂ + H₂SO₄ → BaSO₄ + 2HCl

2NaOH + H₂SO₄ → Na₂SO₄ + H₂O

Al + 3CuCl₂ → 2AlCl₃ + Cu

answer is C.

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Detailed Solution

In a balanced chemical equation, the number of atoms of all elements present on both sides of the equation must be equal. Among the given equations,
BaCl₂ (s) + H₂SO₄ (aq) → BaSO₄ (aq) + 2HCl (aq)
is a balanced chemical equation.

The given table shows the number of atoms of all elements present in the given chemical equation.

Element	Number of atoms in reactants	Number of atoms in products
Ba	1	1
Cl	2	2
S	1	1
O	4	4
H	2	2

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