A Mixture of Na₂CO₃, NaCl, and NiCO₃ Is Prepared

question 161

Multiple Choice

A mixture of Na₂CO₃, NaCl, and NiCO₃ is prepared. The common ion(s) is(are) :

• A) Na⁺
• B) Ni²⁺
• C) Na⁺, Cl ^-
• D) Na²⁺
• E) Na⁺, CO₃^{2 -}

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Definitions:

Distinctiveness

the quality or condition of being clearly different or unique, setting someone or something apart from others.

Kelley's Covariation Model

A psychological theory that explains how individuals attribute cause to events based on the consistency, distinctiveness, and consensus of the event.

Consensus

General agreement among a group or community, often reached through collective deliberation.

External Factor

An influence originating outside an individual or system that significantly affects outcomes or decisions within it.