Per NCERT's Activity 5.3, why is a drop of DILUTE SULFURIC ACID added when crystallizing copper sulfate?
ATo make the solution taste sour
BTo prevent unwanted reactions and help form pure crystals (e.g. inhibit hydrolysis of copper sulfate)
CTo colour the solution
DTo make the crystals smaller
Answer & Solution
Correct answer: B. To prevent unwanted reactions and help form pure crystals (e.g. inhibit hydrolysis of copper sulfate)
Per NCERT Activity 5.3 + Note, sulfuric acid prevents unwanted side reactions and helps pure crystal formation.
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