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Pb(s)+NO 3 ^ - (aq) longrightarrow Pb^ 2+ (aq)+NO(g) Express your answer as a chemical equation. Identify all of the phases in your answer

User HelpNeeder
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2 Answers

4 votes

Final answer:

The student has asked for a balanced equation and phase identification. The corrected equation is Pb(s) + 2 NO₂⁻. → Pb²+(aq) + 2 NO(g) with lead in solid form, nitrate in aqueous solution, lead(II) ion in aqueous solution, and nitrogen monoxide in gaseous form.

Step-by-step explanation:

The student is asking for a balanced chemical equation and the identification of the phases for each substance in the reaction.

The correct balanced equation for the reaction given should be:

Pb(s) + 2 NO₃⁻(aq) → Pb²⁺(aq) + 2 NO(g)

Now, let's identify the phases:

  • Pb(s) is lead in its solid form.
  • NO₃⁻(aq) is the nitrate ion in an aqueous solution.
  • Pb²⁺(aq) is the lead(II) ion in an aqueous solution.
  • NO(g) is nitrogen monoxide in its gaseous form.

Note: The provided equation appears to have a mismatch with the reaction in question. There seems to be a confusion between Pb and Pb(NO₃)₂ and between nitrite (NO₂⁻.) and nitrate (NO).

User Ty Le
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3 votes

Final answer:

The equation provided by the student is unbalanced and needs correction. A correct example of a balanced chemical equation is Pb(NO3)2 (aq) + 2 NaCl (aq) → 2 NaNO3 (aq) + PbCl2 (s), which respects the law of conservation of mass by having an equal number of each type of atom on both sides of the equation.

Step-by-step explanation:

The given chemical equation is: Pb(s) + NO3- (aq) long right arrow Pb2+ (aq) + NO(g)

This equation is not balanced as it stands. However, to balance it, we might consider a different reaction example that is balanced: Pb(NO3)2 (aq) + 2 NaCl (aq) → 2 NaNO3 (aq) + PbCl2 (s)

After counting the number of each atom on both sides of the equation, we find that:

  1. There is 1 Pb atom on both the reactant and product sides.
  2. There are 2 Na atoms on both the reactant and product sides.
  3. There are 2 Cl atoms on both the reactant and product sides.
  4. There are 2 NO3 ions on both the reactant and product sides.

This equation demonstrates the principles of balancing a chemical equation and ensures that the law of conservation of mass is observed. In a balanced equation, the number of each type of atom is equal on both sides of the equation, meaning no atoms are lost or gained in the chemical reaction.

User Gil Nave
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