Buffer Solutions with the Component Concentrations Shown Below Were Prepared

question 105

Multiple Choice

Buffer solutions with the component concentrations shown below were prepared. Which of them should have the lowest pH?

• A) [CH₃COOH] = 0.25 M, [CH₃COO¯] = 0.25 M
• B) [CH₃COOH] = 0.75 M, [CH₃COO¯] = 0.75 M
• C) [CH₃COOH] = 0.75 M, [CH₃COO¯] = 0.25 M
• D) [CH₃COOH] = 0.25 M, [CH₃COO¯] = 0.75 M
• E) [CH₃COOH] = 1.00 M, [CH₃COO¯] = 1.00 M

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Definitions:

Variable Interval Schedule

A reinforcement schedule where rewards are provided after an unpredictable time interval, leading to more consistent behavior.

Fixed Interval Schedule

A type of reinforcement schedule in operant conditioning where the first response after a fixed time period is rewarded.

Variable Ratio Schedule

A reinforcement schedule in which a response is rewarded after an unpredictable number of responses, promoting high and stable rates of the response.

Unpredictable Amount

A quantity or volume that cannot be precisely foreseen or estimated due to varying factors or conditions.