What impurity did you remove when you performed the hot filtration? A. Sugar B.

Question

What impurity did you remove when you performed the hot filtration? A. Sugar B. Water Wood shavings D. Benzoic acid What impurity did you remove when you performed the vacuum filtration? A. Sugar B. Water C. Wood shavings D. Benzoic acid Why is it better to let your solution to cool slowly rather than placing it directly in an ice-bath just after heating? If you solution does not crystallize, what steps should you take to make sure that it does crystallize? What would happen if you added too much water in the initial step of the recrystallization process?

Explanation / Answer

1) In hot filtration process, the substance which is less soluble than the substance to be purified remains in the filter paper and hence can be removed. Thus, in the given question benzoic acid is removed.

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