Problem: Standard thermodynamic quantities for selected substances at 25 °C SubstanceΔH ( kJ/mol)Na(s)0.0Na(g)107.5Cl(g)121.3Cl2(g)0.0NaCl(s)-411.2Pb(s)0.0Pb(g)195.2Pb(NO3)2(s)-451.9N(g)472.7N2(g)0.0O(g)249.2O2(g)0.0O3(g)142.7Enter the chemical equation for the formation of Pb(NO3)2(s) from its respective elements in their standard states.

FREE Expert Solution

We are asked to enter the chemical equation for the formation of Pb(NO3)2(s) from its respective elements in their standard states.

A standard state element/compound have an enthalpy of formation of zero. 

Standard state:

Pb→ Pb(s)

N→N2(g)

O→O2(g)


View Complete Written Solution
Problem Details

Standard thermodynamic quantities for selected substances at 25 °C 

SubstanceΔH ( kJ/mol)
Na(s)0.0
Na(g)107.5
Cl(g)121.3
Cl2(g)0.0
NaCl(s)-411.2
Pb(s)0.0
Pb(g)195.2
Pb(NO3)2(s)-451.9
N(g)472.7
N2(g)0.0
O(g)249.2
O2(g)0.0
O3(g)142.7



Enter the chemical equation for the formation of Pb(NO3)2(s) from its respective elements in their standard states.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Enthalpy of Formation concept. You can view video lessons to learn Enthalpy of Formation. Or if you need more Enthalpy of Formation practice, you can also practice Enthalpy of Formation practice problems.