Which of the Following Statement(s)is(are)TRUE for Coulometry

question 6

Multiple Choice

Which of the following statement(s) is(are) TRUE for coulometry?
I Coulometric methods count electrons used in a chemical reaction to measure analyte.
II Coulometry employs either constant-current or constant-potential conditions.
III An advantage of coulometric methods is high precision and a disadvantage is low sensitivity.
IV Coulometric titrations are constant-potential methods.
V Constant-potential methods utilizing a three-electrode cell are more selective than constant-current methods.

• A)I,II,and V
• B)I,II,IV and V
• C)I,III,and IV
• D)II,IV,and V
• E)I and II

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Definitions:

Enthymeme

A rhetorical argument that is comprised of a premise and a conclusion but leaves one premise unstated.

Validity

The characteristic of possessing factual or logical robustness; in the realm of logic, it denotes a situation where true premises inevitably lead to a true conclusion.

Unstated Premise

An implicit assumption that is not explicitly expressed within an argument but is necessary for the argument's conclusion to hold.

Syllogism

A type of logic where a conclusion is reached from two provided or assumed statements (premises); a typical structure in logical reasoning.