Enter the chemical equation for the formation of Pb(NO3)2(s) from its respective
ID: 521304 • Letter: E
Question
Enter the chemical equation for the formation of Pb(NO3)2(s) from its respective elements in their standard states. Express your answer as a chemical equation. Identify all of the phases in your answer Enter the chemical equation for the formation of Pb(NO3)2(s) from its respective elements in their standard states. Express your answer as a chemical equation. Identify all of the phases in your answer Enter the chemical equation for the formation of Pb(NO3)2(s) from its respective elements in their standard states. Express your answer as a chemical equation. Identify all of the phases in your answerExplanation / Answer
Lead occurs as a monoatomic solid element while nitrogen and oxygen both occur as diatomic gaseous molecules. Therefore, the three are respectively Pb (s), N2 (g) and O2 (g).
The equation is
Pb (s) + N2 (g) + O2 (g) -------> Pb(NO3)2 (s)
We have 6 atoms of O on the right and only 2 on the left; hence multiply O2 by 3 on the left to balance the number of O atoms.
Pb (s) + N2 (g) + 3 O2 (g) -------> Pb(NO3)2 (s)
Both Pb and N atoms are balanced above and hence the above equation is chemically balanced (ans).
Note: We do not prepare Pb(NO3)2 in the lab by direct combination of the elements involved as shown above, rather a lead salt and a nitrate salt are treated in aqueous medium to form Pb(NO3)2.
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