In the preparation of some pure crystals of Cu (NO3)2 starting with CuO, a student gave the following statements as steps he employed. Which of these shows a flaw in his report ? - SchoolNGR

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In the preparation of some pure crystals of Cu (NO3)2 starting with CuO, a student gave ...

In the preparation of some pure crystals of Cu (NO₃)₂ starting with CuO, a student gave the following statements as steps he employed. Which of these shows a flaw in his report ?

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A Some CuO was reacted with excess dilute H₂SO₄
B The solution was concentrated
C When the concentrate was cooled, crystals formed were removed by filtration
D The crystals were washed with very little cold water
E The crystals were then allowed to dry

Correct Answer: Option A

Explanation:

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