Answer:
2AgNO₃ + CaCl₂ ⟶ 2AgCl + Ca(NO₃)₂
Explanation:
Put a 1 in front of the most complicated-looking formula [Ca(NO₃)₂)]:
AgNO₃ + CaCl₂ ⟶ AgCl + 1Ca(NO₃)₂
Balance Ca:
Put a 1 in front of CaCl₂.
AgNO₃ + 1CaCl₂ ⟶ AgCl + 1Ca(NO₃)₂
Balance N:
Put a 2 in front of AgNO₃.
2AgNO₃ + 1CaCl₂ ⟶ AgCl + 1Ca(NO₃)₂
Balance O.
Done.
Balance Ag.
Put a 2 in front of AgCl.
2AgNO₃ + 1CaCl₂ ⟶ 2AgCl + 1Ca(NO₃)₂
Every formula now has a coefficient. The equation should be balanced.
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Check:
Atom On the left On the right
Ag 2 2
N 2 2
O 6 6
Ca 1 1
Cl 2 2
The balanced equation is
2AgNO₃ + CaCl₂ ⟶ 2AgCl + Ca(NO₃)₂