Experiment 6 consider the following reaction at equilibrium: o, is commonly know

Question

Experiment 6 consider the following reaction at equilibrium: o, is commonly known as rust. The physical appearances of Fe and Oz are Note: sk containing the system at equilibrium is heated. The metal in the flask becomes more she known to you. The containing the system is then cooled. The metal in the flask takes on a reddishr more shin appearance Use upon the endothermic. 4. observations provided and LeChatelier's principle to interpret the results of the stresses placed equilibrium system shown above. Indicate whether the reaction is exothermic or Write out the equilibrium reactions for Part I through to Part vi leaving sufficient space each reaction to answer the following questions associated with the equilibrium reactions: Indicate your predictions beneath the , r where appropriate) following the application of a stress to the equilibrium reactions outlined, then, explain your prediction: reaction (using one the following symbols> Part I: On treatment with sodium acetate predict if the pH increases () or decreases () Part ll: On treatment with conc HCI which direction will the equilibrium adjust to minimize the "stress" Shift left (-)or right>) Part l: On treatment with conc HCl, which direction will the equilibrium adjust to minimize the "stress" Shift left e) or right (>) PartIlIl An equilibrium system consisting of bismuth chloride and bismuth hypochlorite in water was treated with H2O, which direction will the equilibrium adjust to minimize the "stress" Shift left ()or right () Part IV On treatment with conc HCl which direction will the equilibrium adjust to minimize the "stress" Shift left (E-)or right () Part V: On treatment with 6 M NaOH which direction will the equilibrium adjust to minimize the "stress" Shift left (e)or right () What function is the vacuum aspirator performing? Predict the color shift of the indicator as a consequence of the applied "stress" te: The prelab assignment will contribute 30% towards your Experiment 6 grade!

Explanation / Answer

3.

4Fe(s)   +   3O2(g)     <------->     2Fe2O3(s) + Heat

When heat is given the flask becomes more shiny, that is Fe(s) is formed. So, backward reaction is endothermic.

When the flask containing system is cooled, that is heat is taken out, the color turns to a reddish-brown. That is it forms Fe2O3. So, the forward reaction is exothermic.

4.

Part I:
CH3COONa   +   H2O   <------>   CH3COOH   +   OH-

So, on adding CH3COONa, OH- concentration will increase. Hence, pH will increase.

Part II:
CH3COONa   +   H2O   <------>   CH3COOH   +   OH-

When HCl will be added, it will react with CH3COONa to form CH3COOH. So, equilibrium will shift towards right.

Part III:
CH3COONa   +   H2O   <------>   CH3COOH   +   OH-

When HCl will be added, it will react with CH3COONa to form CH3COOH. So, equilibrium will shift towards right.

Part IV:
BiCl3   +   H2O   <------>   Bi(OCl)3   +   2HCl

When H2O is added, that is the reactant is added, it will form product. So, equilibrium will shift towards right.

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.