Question

G.C. 2-7 Studying the Effect of Changes in Conditions on an Equilibrium System 57 System No. 4: (Coch,0) + 4C"5 [CoCl2 m + 6H,0 Solutions Observations Dissolved CoCly-61,0 Pink Solution Solution plus HCI Blue solution Heated solution Blue solution Cooled solution Pink solution 9. According to the equilibrium equation, which ion(s) do you have after the solid was diluted? Explain how you know the identity of the ion(s) present. 10. Explain what happened when HCI was added to the solution. 11. Explain what happened when the solution was heated. Was the shift in equilibrium exothermic or endothermic? 12. Explain what happened when the solution was cooled. Was the shift in equilibrium exothermic or endothermic? System No.5: Fe + SCN-S[Fe(SCN) (Forward reaction is exothermic) Solutions Observations Fe(NO), + KSCN mixture Bed Diluted solution pate red Light brown orange Cooled solution No change (red). More red / same Solution + KSCN More red/ same Imam Muky white (AgSCN formed) Solution + NaOH Brown Orange (Felo) formed 13. When the test tube was placed in the hot water bath, was the Shift in equilibrium endothermic or exothermic? Explain. 14. Explain what happened when you added more Fe(NO), and KSCN. 15. Explain what happened after you added AgNO, Hint: Determine the potential products being formed from adding AgNO, to the solution 16. Explain what happened after you added NaOH. Hint: Determine the potential products being formed from adding NaOH to the solution.

can someone answer questions 13-16 please

Answer 1

" Rron anstrenind like um system, then is towards that - Red Coloure in ronic my Tuacfim exothermal Onckhard sceachim Le Challierca Prunciple of any constrant Pressmu, lempertad wu, ruciard conur was applied to a complibrium Syslim Caniibrium saslim will shifted 1 onna dureckim where clecause the constra estech Systern Tet? + S0 ltelser)) Q-13. The above reaction is exothermie fond dire chim. If am sundi in forward direction, the backhandra Should be endothermic. The exothermic Treactina means generatim of heat. This when the test tube is heated the temperature ancreases (constrained). According to the Le chatelieres principle the endolherme Tualtim is prefere at higher timperature. Therefore endothermic ( backrand direction) realtim prefere Q- 14. When Fe(NO3), and KSCN is added to the reaction mixtrice, g4 Increase Fe(NO3)2 Fe 3 3003 KSON Kt +SON the concentration of rent and such an fet im and son. As a results, according to le-Chatelieres principle canilibrium shrifted towards foward direction in formation of Fe (SCN) Jt2 Complex. As a resull Red coloure Зm Слсол. Q-15. After additim of AgNO₃ sointion, San ci react with Agt im.

Agt +S CN- = Assen B (White coloure) a due to very low Ksprave of ASEA Agson, it precipitated out from soutin as white colours. As a result concempratim of SeN im decreases. According to the Le chatetiere principle eauilibrium will striftes towards left side of endothermic side 9-16 when Nath soutim u added, in the Oh easily reacted with fet im and fromed Fernric mydroxide (Fe (871)3]. Fett 35h → Fe(OH)3 h. Вгонт» wlоми As a result the concentration of Fet in sountim decreases. Acurding to le chatler's principle, eauilibrium will stifted towards left hand side of Endothermic side.