# Problem: Calculate ΔG° for H2O(g) + 1/2O2(g) ⇌ H2O2 (g) at 600. K, using the following data:H2(g) + O2(g) ⇌ H2O2 (g)              K = 2.3 X 10  6 at 600. K2H2(g) + O2( g) ⇌ 2H 2O(g)            K = 1.8 X 10  37 at 600. K

###### FREE Expert Solution

Given reactions:

Unknown Kvalue:    H2O (g) + ½ O2 (g)  H2O2 (g)                       K = ?

Reaction 1:                 H(g) + O2 (g) ⇌ H2O2 (g)                                K1 = 2.3 x 106

Reaction 2:                  2 H (g)+ O2 (g) ⇌ 2 H2O (g)                           K2 = 1.8 x 1037

Reaction 1: H2O2(g) is in the product side so no changes needed.

H(g) + O2 (g) ⇌ H2O2 (g)                     K1 = 2.3 x 106

Reaction 2: H2O(g) is in the reactant side with a different coefficient.  We need to reverse the reaction and multiply it by 1/2

When reversing a reaction  get the reciprocal of Kp (1/Kp)

88% (238 ratings) ###### Problem Details

Calculate ΔG° for H2O(g) + 1/2O2(g) ⇌ H2O2 (g) at 600. K, using the following data:

H2(g) + O2(g) ⇌ H2O2 (g)              K = 2.3 X 10  6 at 600. K

2H2(g) + O2( g) ⇌ 2H 2O(g)            K = 1.8 X 10  37 at 600. K

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 Gibbs Free Energy concept. You can view video lessons to learn Gibbs Free Energy. Or if you need more Gibbs Free Energy practice, you can also practice Gibbs Free Energy practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Radnia's class at Louisiana State University - Shreveport.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.