Write the spontaneous net cell reaction. (Use the lowest possible whole number c

Question

Write the spontaneous net cell reaction. (Use the lowest possible whole number coefficients. Include states-of-matter under the given conditions in your answer.) chemPad Help Greek? Your answer appears to have inconsistent states of-matter (c) The left half-cell was loaded with 13.5 mL of Br2() (density 3.12 g/mL). The aluminum electrode contains 12.3 g of Al(s), which element, Br2(/) or Al(s) is the limiting reaget (That is, which reagent will be used up first?) Br20) O Al(s) (d) If the cell is somehow operated under conditions in which it produces a constant voltage of 1.51 V, how much electrical work will have been done when 0.225 mL of Br2() has been consumed? ?ki (e) If the potentiometer is replaced by a 1.30-k? resistor and if the heat dissipated by the resistor is 1.00×10-4 J/s, at what rate (grams per second) is Al(s) dissolving? (In this question, the voltage is not 1.51 V.)

Explanation / Answer

Al being metal will have tendency to loose electron and hence it will be converted from Al(s) into Al^+3 ions.

Br2 being non metal have tendency to gain electron and hence it should be converted into anion as:

Br2 (l) into 2 Br^-1

So net spontaneous equation can be written as:

3Br2 (l) + 2 Al(s) --------> 6 Br^-1 (aq) + 2 Al^+3(aq)

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