What is the cathode in mg(s) | mg2+(aq) || au+(aq) | au(s) mg2+ + 2 e − → mg e ◦ red = −2.36 au+ + e − → au e ◦ red = +1.69 and what is the cell type? 1. mg(s); an elec?

Cathode:

A Voltaic Cell

Explanation

Reduction occurs at the cathode in both electrochemical cells and voltaic cells. The species that gains electrons in a redox process is being reduced. Recall that  ; the species with the most positive standard cell potential would have the reduction reaction with the most negative change in Gibbs free energy and is therefore most stable when reduced than in the original state. The reduction potential of is higher than that of ; as a result, would readily gain electrons from the electrode to produce when connected with an external circuit. Therefore the electrode, immersed in the solution which experiences reduction, would serve as the cathode.

The reaction one would expect to observe in this cell

has a standard cell potential of . The overall reaction is exothermic and leads to the release of energy. The cell is therefore a voltaic cell.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.