When Phosphate Rock, Ca₃(PO₄)₂(s), Is Converted to Phosphorus

question 48

Multiple Choice

When phosphate rock, Ca₃(PO₄) ₂(s) , is converted to phosphorus,

• A) one of the products of the reaction is water.
• B) sulfuric acid is added to generate insoluble calcium sulfate.
• C) hydrogen is used to reduce the phosphate to phosphorus.
• D) silica is added to form a calcium silicate slag.
• E) oxygen must be added to prevent reaction of P₄.

---

Definitions:

Neoplasm

An abnormal growth of tissue, commonly known as a tumor, that can be benign or malignant.

Melanoblast

A cell that is an early stage in the development of a melanocyte, which produces the pigment melanin in the skin.

Leukoplakia

A condition characterized by thickened, white patches on the mucous membranes of the mouth, which can be precancerous.

Leukemia

A type of cancer that affects the blood and bone marrow, characterized by the overproduction of abnormal white blood cells, leading to a weakened immune system.