The Standard Emf for the Cell Using the Overall Cell $\quad$

question 87

Multiple Choice

The standard emf for the cell using the overall cell reaction below is +2.20 V:
$\quad$$\quad$ 2Al(s) + $3 \mathrm { I } _ { 2 }$ (s) ? $2 \mathrm { AL } ^ { 3 + }$ (aq) + $6 \mathrm { I } ^ { - }$ (aq)
The emf generated by the cell when [ $\mathrm { Al } ^ { 3 + }$ ] = 4.5 × $10 ^ { - 3 }$ mol L^-1 and [ $\mathrm { I } ^ { - }$ ] = 0.15 mol L^-1 is $\text { V. }$

• A)2.55
• B)2.44
• C)2.08
• D)2.36
• E)2.32

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Definitions:

LIFO Method

An inventory valuation method that assumes the last items placed into inventory are the first ones sold during an accounting period.

FIFO

First-In, First-Out, an inventory method where the oldest items in stock are sold first.

LIFO

Last-In, First-Out, an inventory valuation method where the most recently produced or purchased items are sold first, used for cost of goods sold calculation.

Pretax Income

The amount of income earned by a business before taxes have been deducted.