Problem: The reaction 2PH3 (g) + As2 (g) ⇌ 2AsH3 (g) + P2 (g) has Kp = 2.9 x 10-5 at 873 K. At the same temperature, what is Kp for each of the following reactions? 2AsH3 (g) + P2(g) ⇌ 2PH3 (g) + As2(g) Express your answer using two significant figures. 6PH3(g) + 3As2(g) ⇌ 3P2(g) + 6AsH3(g) Express your answer using two significant figures. 

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The reaction 

2PH3 (g) + As2 (g) ⇌ 2AsH3 (g) + P2 (g) 

has Kp = 2.9 x 10-5 at 873 K. At the same temperature, what is Kp for each of the following reactions? 

2AsH3 (g) + P2(g) ⇌ 2PH3 (g) + As2(g) 

Express your answer using two significant figures. 


6PH3(g) + 3As2(g) ⇌ 3P2(g) + 6AsH3(g) 

Express your answer using two significant figures. 


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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.

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