Fecu can be prepared from iron and chlorine in twe -0,12 V Which is inue of the
ID: 531421 • Letter: F
Question
Fecu can be prepared from iron and chlorine in twe -0,12 V Which is inue of the enthalpy changes of these routel? -044 V (A) The single-step route has an enthalpy change tha -0.76 V can be larger or smaller than the two-step route, (B) za Fe depending upon conditions. (B) The single-step route will have a smaller enthalpy change than the two-step route. 20, Which part in this (C) The single-step route will have a larger enthalpy electrochemical oell is change than the two-step route (D) The overall enthalpy changes for the two routes are 16. Use these data to determine Standard Enthaliy the enthalpy change for this of Formation, AN (R) 2 21. Predict the voltage for the oell +198 (A) +99 kJ Nia E -0.236 V D) cannot determine without AH for own (A) -0638 V 17. Chlorine will oxidize l as shown in this equation: (C) +0.166 V Cl +21 22. What happens during this reaction? reactivity trends to predict which can be used to prepare from (A) Cadmium metal is oxidized. (B) Cadmium metal is reduced. (C) The O atom in Hois reduced. (A) only (D) The Ni atom in Nioh is oxidized, (D) I.LI, and III (C II and III only 23. The solubility of a salt in water usually increases with Standard Reduction Potentials, increasing temperature because the process is Cura) +0.337 V (A) exothermic so dissolution occurs faster, -0,137 V (B) endothermic so dissolution occurs faster, -0,444 V exothermic so the higher temperature favon -0763 V ,676 V MED -2.356 V endothermic so the higher temperatures favors A buried metal tank will not comode if it is wired to a metal rod that comodes more easily. Which combination protects the tank from comosion? 24. Which reagent, when added to BachdaN) and filtered. produce a solution that is essentially HChian? (A) Mg rod and Sn tank (B) Fe rod and Zn tank (B) HNO, C) Fe rod and Al tank (0) Cu rod and Zn tanks (CO HSO, 0) NansoExplanation / Answer
15- d. according hess law
16-a. Product - reactant
17- b. F and cl more reactive
18- c. Most negative electrode potential
19- b. Two most negative
20- d. Electon flows from anode to.cathode
21-c cathode- anode
22-a. Increase in charge
23-d
24- c
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