9:46 LTE Labs Le.chateliers-lab.pdf Before beginning this experiment in the laboratory you should be alieto answer the following questions PRE LAB QUESTIONS 1. Beiefly stabe LeChidelier\'s Principle. 2. Consider the following equilibrium In which direction will the equilibrium shit if a. HSO,ibs added? Why? b. Buicl, is added? Why C NaCl is added? Why d. Heat is added? Why? Consider the folewing equilibrium foe nitous acid, HNOs,a weak acid In which direction will the equilibrium shift if a NaOH is added? b. NaNO, is added HCl is added? d. The acid solution is made more dilute? Complete and balance the following equations and then wrae balanced net ionic equations. 4· 3. On the busis of LeChitelier\'s Principle, explain why Ag-C0 disos when HNO, is added Previous Next Dashboard Calendar To DoNotifications Inbox Solution Answer: 1. Le Chtelier\'s principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change to re-establish a new equilibrium 2.a) H2SO4 is added: the equilibrium shifts to the left because as there are more sulfate ions are added. b)BaCl2 is added The equilibrium shifts to the left because as there are more Ba^+2 are added. c) NaCl is added There is no shift in the equilibrium. As there are no Na^+1 and Cl^-1 are present in the equilibrium mixture d) Heat is added The equilibrium will shift to the right. As the forward reaction is endothermic, when the heat is added, the reaction will favours the product 3. a) NaOH is added The equilibrium will shift to the left because as there are more OH^-1 ions added, it will react with H+ present in the right side and forms more water. b)NaNO2 is added The equilibrium will shift to the left because the more NO2^-1 ions added, it forms more HNO2 by reacts with H3O^+1. c) HCl is added The equilibrium will shift to the right because more H+ is added in the equilibrium mixture d) The acid solution is made more dilute The equilibrium will shift to the right as there are more water is added. 4 a) AgNO3 (aq) + HCl (aq) <<>> AgCl (s) + HNO3 (aq) Net ionic equation: Ag^+1 (aq) + Cl^-1 (aq) >> AgCl (s) b) NH3(aq) + HCl (aq) <<<>> NH4Cl (s) Net equation: NH3 (aq) + H^+1 (aq) + Cl^-1 (aq) > NH4Cl(s) c) Na2CO3 (aq) + 2HNO3 (aq) <<>> H2O(l) + 2NaNO3 (aq) + CO2 (g) Net ionic equation: CO3 ^-2 (aq) + 2H+ (aq) >> H2O (l) + CO2 (g) 5. Ag2CO3 (s) + 2HNO3 (aq) <<<>>> 2AgNO3 (aq) + H2O (l) + CO2(g) Ag2CO3 is a solid . When adding nitric acid to silver carbonate, it forms soluble silver nitrate..

1. 9:46 LTE Labs Le.chateliers-lab.pdf Before beginning this experiment in the laboratory you
should be alieto answer the following questions PRE LAB QUESTIONS 1. Beiefly stabe
LeChidelier's Principle. 2. Consider the following equilibrium In which direction will the
equilibrium shit if a. HSO,ibs added? Why? b. Buicl, is added? Why C NaCl is added? Why d.
Heat is added? Why? Consider the folewing equilibrium foe nitous acid, HNOs,a weak acid In
which direction will the equilibrium shift if a NaOH is added? b. NaNO, is added HCl is added?
d. The acid solution is made more dilute? Complete and balance the following equations and
then wrae balanced net ionic equations. 4· 3. On the busis of LeChitelier's Principle, explain
why Ag-C0 disos when HNO, is added Previous Next Dashboard Calendar To DoNotifications
Inbox
Solution
Answer:
1. Le Chtelier's principle states that if a dynamic equilibrium is disturbed by changing the
conditions, the position of equilibrium shifts to counteract the change to re-establish a new
equilibrium
2.a) H2SO4 is added:
the equilibrium shifts to the left because as there are more sulfate ions are added.
b)BaCl2 is added
The equilibrium shifts to the left because as there are more Ba^+2 are added.
c) NaCl is added
There is no shift in the equilibrium. As there are no Na^+1 and Cl^-1 are present in the
equilibrium mixture
d) Heat is added
The equilibrium will shift to the right. As the forward reaction is endothermic, when the heat is
added, the reaction will favours the product
3. a) NaOH is added
The equilibrium will shift to the left because as there are more OH^-1 ions added, it will react
with H+ present in the right side and forms more water.
b)NaNO2 is added
The equilibrium will shift to the left because the more NO2^-1 ions added, it forms more HNO2
by reacts with H3O^+1.
c) HCl is added
The equilibrium will shift to the right because more H+ is added in the equilibrium mixture
d) The acid solution is made more dilute

2. The equilibrium will shift to the right as there are more water is added.
4 a) AgNO3 (aq) + HCl (aq) <<>> AgCl (s) + HNO3 (aq)
Net ionic equation: Ag^+1 (aq) + Cl^-1 (aq) >> AgCl (s)
b) NH3(aq) + HCl (aq) <<<>> NH4Cl (s)
Net equation: NH3 (aq) + H^+1 (aq) + Cl^-1 (aq) > NH4Cl(s)
c) Na2CO3 (aq) + 2HNO3 (aq) <<>> H2O(l) + 2NaNO3 (aq) + CO2 (g)
Net ionic equation: CO3 ^-2 (aq) + 2H+ (aq) >> H2O (l) + CO2 (g)
5. Ag2CO3 (s) + 2HNO3 (aq) <<<>>> 2AgNO3 (aq) + H2O (l) + CO2(g)
Ag2CO3 is a solid . When adding nitric acid to silver carbonate, it forms soluble silver nitrate.