A sample of blue copper(II) sulfate pentahydrate is first crushed to a fine powder…
CHEMISTRY · Subjective · CBSE · Chemistry · Acids, Bases and Salts · Acids, Bases and Salts
Problem
A sample of blue copper(II) sulfate pentahydrate is first crushed to a fine powder and then heated to 200 °C until it turns white as water is driven off, producing anhydrous copper(II) sulfate. For each step listed below, indicate whether it represents a chemical change, a physical change, or both, and justify your classification in one sentence for each step.
(i) Crushing the crystals
(ii) Heating to remove the water of hydration