ΔH˚f = 0 for elements in their standard state (25°C and 1 atm)
Cl2(g) at 2 atm
element but not in its standard state
C2H6(g) at standard conditions
not element in its standard state
Which of the following substances have a standard heat of formation (ΔHf°) of zero? Cl2(g) at 2 atm ,C2H6(g) at standard conditions ,O2(g) at 25.0 °C and 1 atm Fe at 1200 °C
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 Formation Equations concept. You can view video lessons to learn Formation Equations. Or if you need more Formation Equations practice, you can also practice Formation Equations practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Gray's class at OU.