What color change would you observe in the dehydration of copper(II) sulfate pentahydrate?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

What color change would you observe in the dehydration of copper(II) sulfate pentahydrate?

Explanation:
The color change is due to the hydration state of copper(II) sulfate. In the pentahydrate, water molecules are coordinated to the copper ion, giving a blue color. When heated, these water molecules are driven off, forming anhydrous copper sulfate, which is white. So you observe blue crystals turning white as the hydrate loses water; if you rehydrate it, the blue color returns.

The color change is due to the hydration state of copper(II) sulfate. In the pentahydrate, water molecules are coordinated to the copper ion, giving a blue color. When heated, these water molecules are driven off, forming anhydrous copper sulfate, which is white. So you observe blue crystals turning white as the hydrate loses water; if you rehydrate it, the blue color returns.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy