Reaction: 1 A + 2B → 2C The initial [A] is 1.20 M and [B] is 1.50 M. At equilibrium, [C] is 0.40 M. What is the value of K?

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Chapter13: Fundamental Equilibrium Concepts
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Reaction: 1 A + 2B → 2C

The initial [A] is 1.20 M and [B] is 1.50 M. At equilibrium, [C] is 0.40 M. What is the value of K?

Expert Solution
Step 1

 1A + 2B → 2CInitial concentration of A = 1.20 MInitial concentration of B = 1.50 MEquilubrium concentration of C = 0.40 M

Step 2

           1A    +      2B →       2CInitial   1.2 M       1.5 M          0at C      -x          -2x        +2x  at eq     1.2-x    1.5-2x      2x

Step 3

at equilibrium,  [C]eq = 2x [C]eq= 0.40 M        x  = 0.20 M

 

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