An unfortunate event of an earthquake results in the loss of grid power and communication in your neighborhood. You would like to turn your portable radio on to find out about what rescue efforts are being taken. In your kitchen, you find safety matches which you can use to make a 1.0 M KClO₃ solution, some aluminum foil, and alum which you can use to make a 1.0 M Al³⁺ solution. You also have some platinum jewelry in your home and you can use a paper towel dipped in salt solution as a salt bridge. What will be the half-reactions for your battery and the overall reaction?

A certain voltaic cell has a cell potential of +1.60 V works on an overall reaction of AuBr₄^–(aq) + Cr(s) → Au(s) + 4 Br^–(aq) + Cr³⁺(aq). Provide the two half-cell reactions involved. 

A voltaic cell with an overall cell reaction Zn(s) + Co²⁺(aq) → Zn²⁺(aq) + Co(s) is built similar to the diagram shown below. The electrodes of the half-cells are made up of a strip of Zn placed in a Zn(NO₃)₂ solution and a strip of Co placed in a CoCl₂ solution. In what direction do the cation and anion flow through the solution?

Which statements are true regarding the concentration cell shown below: 

i. As the reaction proceeds, the concentration in the cathode will decrease

ii. As the reaction proceeds, the concentration in the anode will decrease

iii. The electron flow will stop when the concentrations on both sides are equal

iv. The electron flow will stop when the concentration on the anode is 0.

v. The electron flow will stop when the concentration on the cathode is 0.

Identify which of the following cells correctly represents a concentration cell employing two Pb/Pb²⁺ half-cells with concentrations of 1.5 M and 0.21 M.

Will Cr metal dissolve in 1 M HCl? If yes, write the balanced redox reaction that occurs upon dissolving the metal.