Electrochemical Cells

A cell, $Ag|A{g}^{+}\parallel C{u}^{2+}|Cu,$ initially contains 1 M $A{g}^{+}$  and 1  $MC{u}^{2+}$ ions.

Calculate the change in the cell potential after the passage of 9.65 A of current for 1 h.

How many grams of silver could be plated out on a serving tray by electrolysis of a solution containing silver in +1 oxidation state for a period of 1.0 hours at a current of 8.46 amperes? What is the area of the tray if the thickness of the silver plating is 0.00254 cm? Density of silver is $10.5gc{m}^{-3}.$

An electrochemical cell in which electrical energy is produced involving transfer of matter only is called a concentration cell.

Name the different types of electrochemical cells.

Electrical energy can be used to bring about a redox reaction which is otherwise non-spontaneous.

Define electrochemistry.

Secondary battery is a cell which can be _____  repeatedly for use. Examples are Lithium-ion battery, Lead Storage battery, etc.

Define electrochemical cell. What happens if external potential applied becomes greater than ${{\mathrm{E}}^{°}}_{\mathrm{cell}}$  of electrochemical cell?

What are the functions of salt bridge in a galvanic cell?

In an electrochemical cell, reduction occurs at anode.

In a voltaic cell, the reduction occurs at the negative electrode called the anode and the oxidation occurs at the positive electrode called the cathode.

What type of electrolytes are used in salt bridge? In which direction do the negative ions move in salt bridge?

A half cell is connected with SHE, during the course of reaction $\mathrm{pH}$ of SHE is increased. The connected half cell behaves as

In the cell represented ${\mathrm{Pb}}_{\left(\mathrm{s}\right)}\left|{\mathrm{Pb}}_{\left(1\mathrm{M}\right)}^{2+}\right|\left|{\mathrm{Ag}}_{\left(1\mathrm{M}\right)}^{+}\right|{\mathrm{Ag}}_{\left(\mathrm{s}\right)}$, the reducing agent is

A variable, opposite external potential $\left({\mathrm{E}}_{\mathrm{e}\mathrm{x}\mathrm{t}}\right)$ is applied to the cell $\mathrm{Z}\mathrm{n}\mathrm{ }|\mathrm{ }\mathrm{Z}{\mathrm{n}}^{2+}\mathrm{ }\left(1\mathrm{M}\right)\parallel \mathrm{C}{\mathrm{u}}^{2+}\mathrm{ }\left(1\mathrm{ }\mathrm{M}\right)|\mathrm{}\mathrm{}\mathrm{C}\mathrm{u}$ , of potential 1.1 V. When ${\mathrm{E}}_{\mathrm{e}\mathrm{x}\mathrm{t}}<1.1\mathrm{ }\mathrm{V}$ and ${\mathrm{E}}_{\mathrm{e}\mathrm{x}\mathrm{t}}>1.1\mathrm{ }\mathrm{V}$ , respectively electrons will flow from:

In which of the following electrochemical cell the overall cell reaction is :

$\mathrm{Z}\mathrm{n}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{S}\mathrm{O}}_4\mathrm{ }\left(\mathrm{a}\mathrm{q}\right)\to \mathrm{ }{\mathrm{Z}\mathrm{n}\mathrm{S}\mathrm{O}}_4\mathrm{ }\left(\mathrm{a}\mathrm{q}\right)+{\mathrm{H}}_2\mathrm{ }\left(\mathrm{g}\right)$

In which of the following electrochemical cell overall cell reaction is :

$\mathrm{H}\mathrm{g}\mathrm{O}\mathrm{ }\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{ }\left(\mathrm{g}\right)\to \mathrm{ }\mathrm{H}\mathrm{g}\mathrm{ }\left(\mathcal{l}\right)+{\mathrm{H}}_2\mathrm{O}\mathrm{ }\left(\mathcal{l}\right)$

In which of the following cells net cell reaction is :

${\mathrm{A}\mathrm{g}}^{+}\mathrm{ }\left(\mathrm{a}\mathrm{q}\right)+{\mathrm{C}\mathrm{l}}^{–}\mathrm{ }\left(\mathrm{a}\mathrm{q}\right)\to \mathrm{ }\mathrm{A}\mathrm{g}\mathrm{C}\mathrm{l}\mathrm{ }\left(\mathrm{s}\right)$