Problem: Using standard heats of formation, calculate the standard enthalpy change for the following reaction. N2 (g) + 3H2 (g) → 2NH3 (g) ∆HfKJmolNH3(g)      -46.11N2                       0H2                       0 

FREE Expert Solution
89% (122 ratings)
FREE Expert Solution
89% (122 ratings)
View Complete Written Solution
Problem Details

Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 

N2 (g) + 3H2 (g) → 2NH3 (g) 

∆HfKJmol

NH3(g)      -46.11

N2                       0

H2                       0 


Learn this topic by watchingEnthalpy of Formation Concept Videos
All Chemistry Practice Problems Enthalpy of Formation Practice Problems
Q.A scientist measures the standard enthalpy change for the following reaction to be -665.2 kJ: P4O10 (s) + 6H2O (l) → 4H3PO4 (aq) Based on this value a...
Q.Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2BrF3 (g) → Br2 (g) + 3F2 (g)
Q.Data: ΔHf values: CH4 (g), -74.8 kJ: CO2 (g), -393.5 kJ: H2O (l), -285.8 kJ. Using the ΔHf data above, calculate ΔHrxn for the reaction below. Reactio...
Q.Using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO(g) + H2O(g) → CO2(g) + H2(g) 
See all problems in Enthalpy of Formation

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.

How long does this problem take to solve?

Our expert Chemistry tutor, Leo took 1 minute and 48 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Tang's class at USF.