MgS. 7H₂O is an example of a hydrate. What is the chemical name of this hydrate? 2 magnesium sulfide hydrate magnesium sulfide heptahydrate magnesium (II) sulfide hydrate magnesium (II) sulfide heptahydrate
MgS. 7H₂O is an example of a hydrate. What is the chemical name of this hydrate? 2 magnesium sulfide hydrate magnesium sulfide heptahydrate magnesium (II) sulfide hydrate magnesium (II) sulfide heptahydrate
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:**Question:**
MgS · 7H₂O is an example of a hydrate. What is the chemical name of this hydrate?
**Options:**
- (Selected) magnesium sulfide hydrate
- magnesium sulfide heptahydrate
- magnesium (II) sulfide hydrate
- magnesium (II) sulfide heptahydrate
**Explanation:**
The question asks for the correct chemical name of the hydrate MgS · 7H₂O. The notation "7H₂O" indicates that there are seven molecules of water associated with one formula unit of magnesium sulfide.
In chemical nomenclature:
- A "hydrate" is a compound that includes water molecules integrated into its structure.
- The prefix 'hepta-' indicates the presence of seven molecules of water in the compound.
- The oxidation state of magnesium in magnesium sulfide is typically +2, but it is not always specified in the hydrate name unless needed for clarity.
The most precise name, without assuming the need to know the oxidation state explicitly, is **magnesium sulfide heptahydrate**, as it specifically indicates the number of water molecules.
The selected answer, "magnesium sulfide hydrate," is a less specific term, omitting the number of water molecules. The most accurate name should be "magnesium (II) sulfide heptahydrate" to explicitly include the oxidation state and the number of water molecules.
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