(a)
Interpretation: The equation for the formation of octahydrate of barium hydroxide from the anhydrous salt needs to be written.
Concept Introduction: A hydrate is defined as a compound in which water is present in the form of
(a)
Explanation of Solution
The anhydrous salt is
(b)
Interpretation: The percent by mass of water in barium hydroxide octahydrate needs to be determined.
Concept Introduction: The percentage of water by mass can be simply calculated by taking the ratio of the molar mass of water and that of barium hydroxide octahydrate.
(b)
Explanation of Solution
The formula of barium hydroxide octahydrate is
The mass percent of water in hydrate can be calculated as follows:
Therefore, the mass percent of water in barium hydroxide octahydrate is
Chapter 15 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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