Question

1. in a lab report, students must write out the word equation for

zn + pb(no₃)₂ → zn(no₃)₂ + pb. what is the correct word equation?
options:

• zinc and lead nitrate react to form zinc nitrate and lead
• zinc and lead nitrogen oxide react to form zinc nitrogen oxide and lead.
• zinc and lead (ii) nitrate react to form zinc nitrate and lead (ii).
• zinc and lead (ii) nitrate react to form zinc nitrate and lead

Explanation:

1. The chemical formula $\text{Pb(NO}_3\text{)}_2$ corresponds to lead (II) nitrate (the (II) denotes lead's +2 oxidation state, required for correct naming).
2. $\text{Zn(NO}_3\text{)}_2$ is zinc nitrate, and $\text{Zn}$ is zinc, $\text{Pb}$ is lead.
3. The correct word equation must use the proper IUPAC names for the compounds, including the oxidation state for the transition metal (lead) and avoid incorrect names like "lead nitrogen oxide" or omitting the necessary (II) notation incorrectly. Option D follows all these rules.

Answer:

D. Zinc and lead (II) nitrate react to form zinc nitrate and lead