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

question 3

Multiple Choice

As ethylenediamine is added to a 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.

---

Definitions:

Heart, Spine, Brain

Key components of the human body where the heart circulates blood, the spine supports and protects the central nervous system, and the brain serves as the center of the nervous system, controlling thoughts, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger, and every process that regulates our body.

Placental Stage

The final stage of childbirth in which the placenta is expelled from the uterus after the baby is born.

Over-The-Counter

Refers to products or medications available for purchase without a prescription.

Prenatal Development

The sequence of advancement and expansion in the womb from fertilization to childbirth.