Problem: Identify a substance that is NOT in its standard state. a. HCl(s) b. N2(g) c. Rn(g) d. F2(g) e. Li(s)

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 The standard state of a chemical substance is its phase (solid, liquid, gas) at 25.0 °C and 1 atm pressure.

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Problem Details

Identify a substance that is NOT in its standard state. 

a. HCl(s) 

b. N2(g) 

c. Rn(g) 

d. F2(g) 

e. Li(s)

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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.