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JEE CHEMISTRY MCQ: PRACTICAL CHEMISTRY
1
Hard
1 of 1
Analyzing
+4 | -1
A student is asked to determine the degree of
hydration of a salt by finding the mass of a
clean dried crucible and lid followed by the
mass of the crucible and lid containing a
sample of the salt. The crucible, lid and salt
are heated in a Bunsen burner flame, cooled,
and weighed. If the crucible, lid and salt are
heated only once instead of the recommended
three times, what will be the effect on the
degree of hydration compared with the actual
value?
hydration of a salt by finding the mass of a
clean dried crucible and lid followed by the
mass of the crucible and lid containing a
sample of the salt. The crucible, lid and salt
are heated in a Bunsen burner flame, cooled,
and weighed. If the crucible, lid and salt are
heated only once instead of the recommended
three times, what will be the effect on the
degree of hydration compared with the actual
value?
View answer and explanation
Correct option: B
Too low
The correct answer is B (Too low) because if the salt is heated only once, not all the water of hydration will be driven off, leading to an underestimation of the degree of hydration.
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