Multiple Choice Questions

Crystals of copper sulphate pentahydrate on heating form ........

Science and technology and computer Chemistry

Crystals of copper sulphate pentahydrate, on heating, form

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EPFO EO AO 2023

blue colour salt

white colour salt

green colour salt

brown colour salt

- Copper sulphate pentahydrate (CuSO4·5H2O) is originally blue in color due to the water of crystallization.

- On heating, it loses its water molecules and becomes anhydrous.

- The loss of water turns it into a white color salt (anhydrous copper sulphate, CuSO4).

- Heating further doesn't cause a color change to any shade close to green or brown.

Correct Answer: Option: 2, white colour salt

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