Chemical Reaction Engineering
In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will

Become one fourth
Be halved
Remain the same
Also be doubled

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Chemical Reaction Engineering
Promoter.

Atlers the position of equilibrium in a reversible reaction
Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals
Initiates a chemical reaction and is a catalyst by itself
All of these

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