As Ethylenediamine Is Added to an Aqueous Solution of [Ni(H₂O)₆]²⁺,the

question 52

Multiple Choice

As ethylenediamine is added to an aqueous solution of [Ni(H₂O) ₆]²⁺,the water molecules are replaced two at a time by ethylenediamine to produce the sequence of ions: [Ni(H₂O) ₆]²⁺,[Ni(en) (H₂O) ₄]²⁺, [Ni(en) ₂(H₂O) ₂]²⁺,and [Ni(en) ₃]²⁺.How does the color change through the sequence?

• A)The color changes toward red with the addition of ethylenediamine.
• B)The color changes toward purple with the addition of ethylenediamine.
• C)Red,yellow,purple,blue with the addition of ethylenediamine.
• D)There is no color change with the addition of ethylenediamine.
• E)The color change cannot be predicted with the addition of ethylenediamine.

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Definitions:

Psychosexual Stages

A theory proposed by Freud describing how personality develops through five stages (oral, anal, phallic, latency, genital) centered on erogenous zones.

Phallic

Relating to or resembling the penis, often used in the context of Freudian psychoanalysis to describe a stage of human development.

Genital

Pertaining to the external and internal organs of reproduction in both males and females.

Defense Mechanism

Psychological strategies brought into play by individuals, groups, or even nations to cope with reality and to maintain self-image.