21-25 work not necessary Which of the following reactions would have the smalles

Question

21-25 work not necessary Which of the following reactions would have the smallest value of at 298 K? A) A + B rightarrow 3 C: E^+_cell = +1.62 V B) A + B rightarrow 2 C: E degree_cell = + 0.62 V C) A + 2B rightarrow C: E degree_cell = +0.62 V D) A + B rightarrow C: E degree _cell = -0.062 V E) More information is needed to determine. How many electrons are transferred in the following (unbalanced reaction: Cl_2(s) + Fe(s) rightarrow Cl^-(aq) + Fe^3+(l) A) 2 B) 3 C) 4 D) 6 E) 8 A rechargeable battery A) is an electrolytic cell when charging B) is a voltaic cell when discharging C) is dead when Q = K D) flips anode and cathode when charging E) all of the above What is the minimum external potential required to drive the reaction 2l(s) + 2H_2O(l) rightarrow I_2(aq) + H_2(g) + 2OH6-(aq) i_2 + 2e^- rightarrow 2l^- E degree = 0.54 V 2H-2O + 2e^- rightarrow H_2 + 2OH E degree = 0.83 V A) -1.37 V B) -0.29 V C) 0 V D) 0.29 V E) 1.37 V What is the minimum external potential require

Explanation / Answer

(21) Smaller is the E0 value, smaller is the K value.

So, (B)

(22) balanced equation: 3 Cl2 (g) + 2 Fe (s) -----------> 6 Cl- (aq.) + 2 Fe3+ (aq.)

So, (D)

(23) (E)

(24) (E) = 0.54 - ( - 0.83) = 1.37

(25) (C)

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

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