1) Aqueous ammonia solution NH3(aq) + H2O (l) arrows NH4+1 (aq) + OH-1 (aq) upon
ID: 531582 • Letter: 1
Question
1) Aqueous ammonia solution NH3(aq) + H2O (l) arrows NH4+1 (aq) + OH-1 (aq) upon addition of NH4Cl in what direction did equilibrium shift? What ion caused shift?why 2) cobalt(ii) chloride solution Co(H20)6+2 (aq) +4Cl-(aq) arrows Cocl4-2(aq) +6H2O(l) upon additon of HCl what direction equlilibrium shift? what ion caused why? upon heating what direction shift? what ion caused it? why 3) iron(iii) thiocyanate solution upon addition of FeCl3 what direction shift? what ion caused shift? why upon addition of KSCN what direction did it shift? what ion caused it why? addition of AgNO3 what direction did it shift? what ion caused shift? why
Explanation / Answer
Ans 1
The reaction is
NH3 + H2O = NH4+ + OH-
The addit4 of NH4Cl in the solution caused the addition of ammonium (NH4+) Ions in the solution.
The equilibrium shifts in the left side or the backward direction because according to the le chatelier's principle , a system at Equillibrium will always try to nullify or cancel out the effect of any external factor to it.
Here ammonium ions are already present in the products so their further addition will stop their formation and the reaction tends to move in backward direction.
Ammonium ions caused the shift.
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