Problem: Consider the following reaction: H2(g) + I2(g) ⇌ 2HI(g)Complete the following table. Assume that all concentrations are equilibrium concentrations in M.T(oC)  [H2] (M)   [I2] (M) [HI] (M)    Kc25  0.0355  0.0388 0.922   –340- 4.60×10−2  0.390 90.6 445 4.90×10−2  4.72×10−2     – 50.2Find [HI] at 445 oC.

🤓 Based on our data, we think this question is relevant for Professor Goforth's class at ALAMO SAN ANTONIO.

FREE Expert Solution

Recall that the equilibrium constant is the ratio of the products and reactants

H2(g) + I2(g) ⇌ 2HI(g)


The Kc expression for the reaction is:


Kc=[products][reactants]=[HI]2[H2][I2]


We’re given the following at 445 oC:

[H2] = 4.90 × 10−2 M              [HI] = ?

[I2] = 4.72 × 10−2 M                Kc = 50.2


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Problem Details

Consider the following reaction: H2(g) + I2(g) ⇌ 2HI(g)
Complete the following table. Assume that all concentrations are equilibrium concentrations in M.

T(oC)  [H2] (M)   [I2] (M) [HI] (M)    Kc
25  0.0355  0.0388 0.922   –
340- 4.60×10−2  0.390 90.6 
445 4.90×10−2  4.72×10−2     –
 50.2


Find [HI] at 445 oC.

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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 Equilibrium Expressions concept. If you need more Equilibrium Expressions practice, you can also practice Equilibrium Expressions practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Goforth's class at ALAMO SAN ANTONIO.