Eq 8 -Chem. -Chem. Eq Chemical Equilibrium Here Record All Data and observations
ID: 518336 • Letter: E
Question
Eq 8 -Chem. -Chem. Eq Chemical Equilibrium Here Record All Data and observations briu i. Studying he Dissociation HCH LAcetic d in Water color of original equilibrium mixture: color change after addition ofNaC2Hoo2: Orange color change after heating mixture: ellow color change after cooling mixture: orange IL Stu ng the LC IICoGdzosl' Equilibrium color of original equilibrium mixture: color change after addition of distilled water: in color change after addition of 12MHCl: color change after addition of distilled water: color change after heating mixture: dark color change after cooling mixture: Pink i. Stud ing the Dissolution NHCI in water Equilibrium of initial appearance of equilibrium mixture: Clear change after addition of 12MHci whit lem. appearanceExplanation / Answer
14. dissolution of ammonium chloride in water as it is endothrmic reaction. heat is taken by the system from surrounding.
NH4Cl + H2O---------------------> NH4OH + HCl
or
NH4Cl(s) ----> [NH4]+(aq) + [Cl]-(aq)
15. Le Chatelier's principle states that if any of conditions of a chemical reaction at equilibrium changes, the reaction will shift to a direction to oppose that change and restore the equilibrium.
by adding HCl in the acetic acid
CH3COOH + H2O <============> CH3COO- + H+
By adding HCl will increase hydronium ion concentration so the reaction will be shifted to the left side, accordingly acetate ions concentration will decrease.
16. Dissolution of ammonium chloride in water as it is endothrmic reaction. heat is taken by the system from surrounding. The energy from the water is actually required to help "break" the bond between NH4Cl compound , in to it's dissociated particles. Because the water has to "put energy in" to breaking the molecule the energy has to come from some where (thermodynamics).when we add the ammonium chloride we observe that the whole sysyem get cooled which shows the endothermic reaction.
17.
NH4Cl(s) ----> [NH4]+(aq) + [Cl]-(aq)
the ammonium chloride is in solid state which is ionic compound, the water molecule can form the sphere of hydration with NH4+ as well as Cl- ion, which get hydrated, in NH4 + is possitive center forms sphere of hydration with the negative charge of oxygen and the Cl- can form the hydration sphere with the delta positive charge of H of the water molecule.
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