According to the question ,
Kc = 53.3
Moles of H2 = 0.800 moles
Moles of I2 = 0.800 moles
Volume = 1 L
We know that Molarity = Number of Moles / Volume in L
Molarity of H2 = 0.800 moles / 1 L = 0.80 M
Molarity of I2 = 0.800 moles / 1 L = 0.800 M
H2 + I2 = 2 HI
So The expression for K = [HI]2 / [H2][ I2]
So The Value of N = 2 .......( It is the Coefficient of HI in The Power format )
Now Make the ICE table
H2 + I2 = 2 HI
H2 (M) | I2 (M) | 2 HI (M) | |
Initial | 0.80 | 0.80 | 0.00 |
Change | -x | -x | + 2x |
Equilibrium | 0.80 - x | 0.80 - x | +2x |
So Value in the Terms of x ]
[H2] = 0.80 - x
[ I2] = 0.80 - x
[HI] = 2x
So K = [HI]2 / [H2][ I2]
=> 53.3 = (2x)2 / ( 0.80 -x ) ( 0.80-x )
=> x = 0.627 M
So equilibrium Concentration for HI = 2*x = 2*0.627 = 1.254 M
[HI] = 1.254 M
Thank you
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