Assume that you are in charge of a designing a process to produce acetylene (C2H

Question

Assume that you are in charge of a designing a process to produce acetylene (C2H2) from ethane (C2H6), which is the reverse of the reaction shown above. Use your knowledge of equilibrium to suggest a set of conditions that would maximize the concentration of acetylene (C2H2) at equilibrium. Assume that it is possible to add or remove any of the three components of this system and to change the general conditions of the reaction (pressure, temperature, volume). C2H2(g)+2H2(g)C2H6(g) H=- Use your knowledge of equilibrium to suggest a set of conditions that would maximize the concentration of acetylene (C2H2) at equilibrium.

Explanation / Answer

C2H2(g)   + 2H2(g)<----------------------> C2H6(g) , H=-

1)   addition of C2H6 or removal of H2 will cause to increase the concentration of C2H2

reason : addition of any one of the reactant or addition of any one of the product will cause to increase concentration of reactants

2) low pressure is needed for shift backward direction

reason: if we decreases the pressure the equilibrium shifts where moles increases side

3) high temperature is needed

forward reaction is exothermic reaction so increase in temperature favours bakward direction

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