When zinc reacts with very dilute

CHEMISTRY · Single correct · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

When zinc reacts with very dilute HNO3\text{HNO}_3, the oxidation state of nitrogen changes from: (1) +5+5 to +1+1 (2) +5+5 to −3-3 (3) +5+5 to +4+4 (4) +5+5 to +3+3

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