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Chemical Equilibrium

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By Expert Faculty of Sri Chaitanya
Question

Thermal decomposition of gaseous X2 to gaseous X at 298 K takes place according to the following equation: X2g 2Xg.

The standard reaction Gibbs energy, ΔrG0,of this reaction is positive. At the start of the reaction, there is one mole of X2 and no X. As the reaction proceeds, the number of moles of  X formed is given by b. Thus, βequilibrium is the number of moles of  X formed  at equilibrium . The reaction is carried out at a constant total pressure of 2 bar. Consider the gases to behave ideally. (Given : R=0.083 L bar K1mol1)

 

Moderate
Question

The equilibrium constant KP for this reaction at 298 K, in terms of βequilibrium is

Solution

X22x,                   Δ  =ve

1                                         01β2                         β

Px2=1β21+β2x2=2β2+β×2

Px=β1+β2.2=4β2+β

kp=4β2+β22β2+β.2=16β22+β22+β22β

=8β24β2

Question

The INCORRECT statement among the following , for this reaction, is 

Solution

β value cannot be calculated,


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