Question

For Activity 2: Observations and Interpretations CH,COOH(aq) C CHCOO (aq) + 1) What was the color of the solution after adding the drop of methyl orange indicator red indicator showing high (H+] 2) What color did you observe after adding the sodium acetate, CH,COONa? it went on orange: indicator housing less 3) Assume that the dynamic equilibrium represented in the equation given above is present in the original solution you placed in the test tube. Based on LeChatelier's Principle, as stated above. You will interpret your observations in 2, above: (Note: CH3COONa dissolves in water and produces Na+ and CH,C00 in the solution.) a) When sodium acetate was added, which reaction (forward or reverse) was favored? What evidence supports this? Why would this reaction be favored? b) Assume that the system rapidly returns to equilibrium. At this new position of equilibrium, is there more or less H+ present after the addition of the CHCOO-? Based on this, is there now more, less, or the same amount of CH,COOH? c) Explain your answer to the second question in part b. son Activity 3: Observations and Interpretations Cocid (aq) + 6H2O(l) e Co(HO) *"(aq) + 4CH-(aq) 1) What was the original color of the cobalt solution? Pink 2) What color did you observe after adding the concentrated HCl solution? Purple/blue 3) What color did you observe after adding the DI water? returns to pink. 4) Assume that the dynamic equilibrium represented in the equation is present in the original solution you placed in the test tube. Based on LeChatelier's Principle, as stated above, you will interpret your observations in 2, above, a) When hydrochloric acid was added, which reaction (forward or reverse) was favored? What evidence supports this? Why would this reaction be favored? b) Assume that the system rapidly returns to equilibrium. At this new position of equilibrium, is there more or less Co(H2O), present after the addition of the acid? Based on this, what happened to the amount of CoCl2?

Answer 1

For Activity 2 Dry For Reaction, CH3COOH(aq) F CH2C00109) + H*609 when sodium accetate is added the reaction shifted to backward re- Reverse reaction is yavared, change of colour of methys orange indicator from red to orange is the evidence which shows that concentration og Htion is decreasing. This reaction is lavored because a CH₃COONa CH3C00" wt wat Due to this the concentration of CH3C00- ion increases decorating to te chatelier's Principle, every reaction won't do a move in the direction to reach equilibrium. Here due to increase of Chacool ion reaction shifts in backward direction-

I T by → At this new position of equilibrium H + ion is more less . . And i the amount of CH3COOH is more 1 Al Que 2 backward av C H3COOH to shift direction , increases. We of the reaction in amount of