(a) What is the colour of ferrous sulphate crystals? How does this colour change after heating?
(b) Name the products formed on strongly heating ferrous sulphate crystals. What type of chemical reaction occurs in this change? Write chemical equation of the reaction.

Open in App

Solution

(a) Ferrous sulphate is green in colour. On heating, the green crystals are converted into a dirty-yellow anhydrous solid as it loses water of crystallization.

(b) When ferrous sulphate is strongly heated anhydrous material loses sulphur dioxide and sulphur trioxide leaving a reddish-brown iron oxide.
$2 {FeSO}_{4} \to {Fe}_{2} O_{3} + {SO}_{2} + {SO}_{3}$

Suggest Corrections

Similar questions

Q. Heating of ferrous sulphate crystals results in change in the colour of the crystals. This reaction is an example of:

Q. While demonstrating decomposition reaction in laboratory the teacher heated ferrous sulphate crystals in a hard glass dry boiling tube.
(i) What change in the colour of ferrous sulphate crystals you will observe?
(ii) What type of smell does the gases coming out of the boiling tube would have?

2g of ferrous sulphate crystals are heated in a dry boiling tube.
(i) List any two observations.
(ii) Name the type of chemical reaction taking place.
(iii) Write the chemical equation for the reaction.

Q. When green crystals of ferrous sulphate are heated, the colour of the crystals changes because:

Q. (i) In the combination reaction of adding water to quick lime, name the product formed and write its colour.

(ii) While studying the decompostion reaction, by heating anhydrous ferrous sulphate crystals in a test-tube, a product is formed in the test-tube. Name the product and write its colour.

Join BYJU'S Learning Program

(a) What is the colour of ferrous sulphate crystals? How does this colour change after heating? ​(b) Name the products formed on strongly heating ferrous sulphate crystals. What type of chemical reaction occurs in this change? Write chemical equation of the reaction.

(a) What is the colour of ferrous sulphate crystals? How does this colour change after heating?
(b) Name the products formed on strongly heating ferrous sulphate crystals. What type of chemical reaction occurs in this change? Write chemical equation of the reaction.