1. Tardigrade
  2. Question
  3. Chemistry
  4. For the reaction 2HI(.g.) leftharpoons H2(.g.)+I2(.g.) . The value of Kc is 4. If 2 mol of H2 , 2 mol of I2 and 2 mol of HI are present in one litre container then moles of I2 present at equilibrium is:

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Q. For the reaction $2HI\left(\right.g\left.\right) \rightleftharpoons H_{2}\left(\right.g\left.\right)+I_{2}\left(\right.g\left.\right)$ . The value of $K_{c}$ is 4. If 2 mol of $H_{2}$ , 2 mol of $I_{2}$ and 2 mol of HI are present in one litre container then moles of $I_{2}$ present at equilibrium is:

NTA AbhyasNTA Abhyas 2020Equilibrium

Solution:

Solution

$k_{c}=4=\frac{\left(2 + x\right)^{2}}{\left(2 - 2 x\right)^{2}}$

$2=\frac{2 + x}{2 - 2 x}$

$X=0.4$

Mol of $I_{2}$ at equilibrium $=2+0.4=2.4$