Given reaction: Cl–(aq) + NO3−(aq) → NO(g) + Cl2(g)
Step 1: Separate half-reactions:
Cl–(aq) → Cl2(g) NO3−(aq) → NO(g)
Step 2: Balance non-hydrogen and non-oxygen elements first:
2 Cl–(aq) → Cl2(g) NO3−(aq) → NO(g)
Cl–(aq) + NO3–(aq) → NO(g) + Cl2(g)
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