can you solve it from a through d (5 points each) (a) Consider the gas phase rea

Question

can you solve it from a through d

(5 points each) (a) Consider the gas phase reaction A+ 3B 5. 2C . To maximize the production of C, should u increase or decrease the overall pressure? Explain your answer. (b) In an electrochemical cell, will increasing the activity of the cations at the cathode increase or decrease the overall cell's potential? Justify your answer. (c) True or false. For an electrochemical cell to produce a potential, the identities of the half cells must be different. Explain your answer. (d) True or false. Doubling the size of a battery will double its output (e.g., a battery that produces 3 V will produce 6 V when doubled in size). Explain your answer

Explanation / Answer

(a) on increasing pressure reaction will go in a direction where no. of gaseous moles is decreasing. in abve reaction gaseous moles at reactant = 4, and gaseous moles t product side =2. so on increasing pressure reaction will go in forward direction, so maximise the concentration of product C.

so increasing pressure will maximise the production of C.

(b) for a cell potential is given by

Ecell = E0cell - 0.05916 / 2 (log [anode] / [cathode] )

so on increasing activity at cathode ions, valu of log [anode] / [cathode] will decrease, and Ecell will increase.

so potential will increase.

(c) No this is not true because even if identity of cell is same than E0cell (standard potential) will be zero but cell potential will be there according to Ecell = - 0.05916 / 2 (log [anode] / [cathode] ). so by changing concentraion of same ions at anode and cathode we can generate cell potential.

so Statement is not true (i.e. false state ment).

(d) on doubling the size of battery, potential will not change because potential depands on standard potential (which is constant), and ratio of concentraion at anode and cathode (although concentration will change on changing size of battery but there ratio ([anode] / [cathode]) will be constant) , so potential doesn't change.

so Statement is False.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

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