A Concentration Cell Is Constructed Using Two Co Electrodes with Co²⁺

question 54

Multiple Choice

A concentration cell is constructed using two Co electrodes with Co²⁺ concentrations of 0.14 M and 1.8  10^-5 M in the two half-cells. Determine the standard reduction potential of Co²⁺, given that the potential of the cell at 25°C is 0.115 V.

• A) +0.230 V
• B) +0.115 V
• C) -0.115 V
• D) This cannot be determined with the information given.
• E) 0 V

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Definitions:

Variable-ratio Schedule

A reinforcement schedule in behavioral psychology where a response is rewarded after an unpredictable number of responses, enhancing motivation to respond.

Specified Number

A particular or exact number that has been identified or stated.

Fixed-interval

A timing-based reinforcement plan where rewards are provided following the first response once a set timeframe concludes.

Variable-interval

An unpredictable reinforcement schedule that provides rewards after an unspecified time period following a response.