Interpretation: The mass of the water of hydration if a hydrate loses 0.025 mol of water on heating needs to be determined.
Concept introduction:
The mass of a substance can be calculated from number of moles as follows:
m=n×M
Here, m is mass, n is number of moles and M is molar mass.
Answer to Problem 80SSC
The mass of water lost is 0.45 g.
Explanation of Solution
Given information:
Moles of water loss =0.025 mol
The mass of water of hydration is equal to the mass of water lost on heating. The mass can be calculated using number of moles and molar mass.
The molar mass of water is 18.01 g/mol thus, mass of water of hydration will be:
Mass of water of hydration = Moles × Molar Mass
=0.025 mol×18.01 g/mol=0.45 g
Therefore, the mass of water lost is 0.45 g.
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