Question

B saturated ammonium chloride

what is the evidence for a shift in equilibrium?

Answer 1

Saturated NH₄Cl is:

NH₄Cl(s) <=> NH₃(aq) + HCl(aq)

Where In saturated solution, maximum amount of solute is dissolved in minimum amount of solvent.

Now, By Le chateleir's Principle,If a reaction at equilibrium is subjected to a change in any of the reaction condition like pressure, concentration etc then reaction will shift in a direction to undo the effect of change

Thus, if we add HCl or NH₃ to it then concentration of HCl or NH₃ in solution increases and hence reaction will shift to the left. Thus more precipitation of NH₄Cl takes place.

But if reaction shift to right then equilibrium , then formation of NH₃ takes place.