Knowee
Questions
Features
Study Tools

For the reactionZn(s) + Cu+2(0.1 M) → Zn+2(1 M) + Cu(s)taking place in a cell,  is 1.10 volt.ECell for the cell will be Given : 2.14 volt1.80 volt1.07 volt0.82 volt

Question

For the reactionZn(s) + Cu+2(0.1 M) → Zn+2(1 M) + Cu(s)taking place in a cell,  is 1.10 volt.ECell for the cell will be Given : 2.14 volt1.80 volt1.07 volt0.82 volt

🧐 Not the exact question you are looking for?Go ask a question

Solution

The given reaction is:

Zn(s) + Cu+2(0.1 M) → Zn+2(1 M) + Cu(s)

The standard reduction potentials are given as:

E°(Cu+2/Cu) = +0.34 V E°(Zn+2/Zn) = -0.76 V

The cell reaction is obtained by subtracting the reduction half-cell reaction for Zn from the reduction half-cell reaction for Cu. Therefore, the standard cell potential (E°cell) is obtained by subtracting the standard reduction potential for Zn from that for Cu.

E°cell = E°(Cu+2/Cu) - E°(Zn+2/Zn) = 0.34 V - (-0.76 V) = 1.10 V

The Nernst equation allows us to calculate the cell potential under non-standard conditions:

Ecell = E°cell - (RT/nF) * ln(Q)

where: R is the gas constant = 8.314 J/(mol*K) T is the temperature in Kelvin. If not given, assume room temperature (25°C or 298K). n is the number of moles of electrons transferred in the balanced redox reaction. For this reaction, n=2. F is Faraday's constant = 96485 C/mol Q is the reaction quotient = [Zn+2]/[Cu+2]

Assuming room temperature and plugging in the given concentrations into the Nernst equation:

Ecell = 1.10 V - (8.314 J/(mol*K) * 298K / (2 * 96485 C/mol)) * ln(1/0.1) Ecell = 1.10 V - (0.0257 V) * ln(10) Ecell = 1.10 V - 0.059 V Ecell = 1.04 V

None of the given options match this result. Please check the problem statement or the given options.

This problem has been solved

Similar Questions

alculate the cell voltage for a Daniell cell Zn(s) + Cu2+(aq) 🡪 Zn2+(aq) + Cu(s) at 50 °C, Zn2+ concentration: 10-3 M & Cu2+ concentration: 10-1 M

The standard EMF for the given cell reaction Zn+Cu2+⇒Cu+Zn2+ is1.10 V at 25∘C. The EMF for the cell reaction, when 0.1MCu2+ and 0.1M Zn2+ solutions are used, at 25∘C is1.10 V0.110 V−1.10 V−0.110 V

A zinc-copper cell is constructed:Zn | Zn || Cu | Cu.What occurs to the mass of the copper electrode as the reaction proceeds? Group of answer choicesIt remains the same.It increases.cannot be determinedIt decreases.

In a zinc-copper cell, Zn | Zn(1M) || Cu(1M) | Cu, which electrode is negative?Group of answer choicesCu(s)Zn(s)Zn(aq)Cu(aq)

The equilibrium constant for a cell reaction, Cu(g) + 2Ag+(aq) → Cu2+(aq) + 2Ag(s) is 4 × 1016. Find  for the cell reaction.(Given log10 2 = 0.301)0.63 V0.49 V1.23 V3.24 V

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.