d - block and f - block Elements
Ferrous sulphate decomposes with the evolution of a gas having a characteristic odour of burning Sulphur. Write the chemical reaction involved and identify the type of reaction.
Ferrous sulphate on strong heating gives
Ferrous sulphate on strong heating gives $$ Fe_2O_3, \ SO_2$$ and $$SO_3.$$
$$2FeSO_4 \rightarrow Fe_2O_3 +SO_2 +SO_3 $$
Ferrous sulphate decomposes with the evolution of a gas having a characteristic odour of burning Sulphur. Write the chemical reaction involved and identify the type of reaction.
Light green crystals of ferrous sulphate lose water molecule and turn brown on exposure to air. This is due to its oxidation to
Green vitriol is
How will you obtain: Ferric chloride from ferrous sulphate.
How will you obtain: Ferric sulphate from Mohr's salt.
Which sulphate on strong heating gives $$SO_2$$ and $$SO_3$$?
A certain inorganic compound $$(A)$$ on heating loses its water of crystallization. On further heating, a blackish-brown powder $$(B)$$ and two oxides of sulphur, $$(C)$$ and $$(D)$$ are obtained. The powder $$(B)$$ on boiling with hydrochloric acid gives a yellow solution $$(E)$$. When $$H_2S$$ is passed in $$(E)$$ a white turbidity $$(F)$$ and a apple green colour $$(G)$$ are obtained. The solution $$(E)$$ on treatment with thiocyanate ions gives a blood-red coloured compound $$(H)$$. Identify from $$(A)$$ to $$(H)$$.
Compound $$(A)$$ is a light green solid. It gives following tests: It dissolves in dilute $$H_2SO_4$$ No gas is evolved.
Compound $$(A)$$ is a light green solid. It gives following tests: A drop of $$KMnO_4$$ is added to the above solution. The pink colour is decolourised.
Compound $$(A)$$ is a light green solid. It gives following tests: Compound $$(A)$$ is heated strongly. Gaseous $$(B)$$ and $$(C)$$ with pungent smell come out and a brown residue $$(D)$$ is left.