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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Chemical Equilibrium

NTA Abhyas 2020 · Chemistry · Chemical Equilibrium

For the reaction 2HI ( g ) ⇌ H _ 2 ( g ) + I _ 2 ( g ) . The value...

For the reaction 2HI(g)⇌H2(g)+I2(g)2HI ( g ) ⇌ {H}_{2} ( g ) + {I}_{2} ( g ). The value of Kc{K}_{c} is 4. If 2 mol of H2{H}_{2} , 2 mol of I2{I}_{2} and 2 mol of HI are present in one litre container then moles of I2{I}_{2} present at equilibrium is:For the reaction 2HI ( g ) ⇌ H _ 2 ( g ) + I _ 2 ( g ) . The value of K _ c is 4. If 2 mol of H _ 2 , 2 mol of I _ 2

Options

  1. A0.8
  2. B3.2
  3. C2.4
  4. D4.4

Correct answer

C. 2.4

Step-by-step solution

For the reaction 2HI ( g ) ⇌ H _ 2 ( g ) + I _ 2 ( g ) . The value of K _ c is 4. If 2 mol of H _ 2 , 2 mol of I _ 2
kc=4=(2+x)2(2−2x)2{k}_{c} = 4 = \dfrac{{\left(2 + x\right)}^{2}}{{\left(2 - 2x\right)}^{2}}
2=2+x2−2x2 = \dfrac{2 + x}{2 - 2x}
X=0.4X = 0.4
Mol of I2{I}_{2} at equilibrium =2+0.4=2.4= 2 + 0.4 = 2.4
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