Potassium Permanganate Is NOT a Primary Standard.Why

question 18

Multiple Choice

Potassium permanganate is NOT a primary standard.Why?
I Solid KMnO₄ contains traces of MnO₂.
[ _actual] < [ _calculated]
II Permanganate reacts with organic material in distilled water.
[ _actual] > [ _calculated]
III Permanganate is unstable in aqueous solution,producing MnO₂,O₂,and OH⁻.
[ _actual] < [ _calculated]
IV The presence of MnO₂,Mn²⁺,heat,light,acids,and bases increase the rate of reaction between permanganate and water.
[ _actual] < [ _calculated]

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

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Definitions:

Hofstede's Dimensions

A framework for understanding cultural differences across societies, defined by six dimensions including power distance, individualism versus collectivism, and uncertainty avoidance.

Collectivist

A collectivist is someone who prioritizes the goals and values of the group over individual desires, often found in societies that emphasize community and collaboration.

Major Promotion

An advancement in one's career that significantly increases responsibility, rank, and often compensation, marking a substantial progression within an organization.

Uncertainty Avoidance

A cultural dimension that describes the extent to which a society feels uncomfortable with uncertainty and ambiguity.