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Identify the statement which is not correct for copper sulphate:

Correct answer: B. It reacts with KCl to give Cu2Cl2

  • A. It reacts with NaOH and glucose to give Cu2O
  • B. It reacts with KCl to give Cu2Cl2
  • C. It gives CuO on strong heating
  • D. It reacts with KI to give I2

Explanation

The correct answer is that the statement about copper sulfate reacting with KI to produce I2 is inaccurate. Copper sulfate does indeed react with KI, leading to the oxidation of iodide ions to iodine. The other options correctly describe the reactions involving copper sulfate, including its reaction with KCl to form copper(I) chloride and its decomposition to copper(II) oxide upon heating. The incorrect statement regarding the reaction with NaOH and glucose highlights a misunderstanding of copper sulfate's chemical behavior in the context of redox reactions and its application in qualitative tests.

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About s-Block and p-Block Elements

The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.

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