JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Easy

1 of 1

Analyzing +4 | -1

An aqueous solution of

\mathrm{FeS}{\mathrm{O}_4},\mathrm{A}{\mathrm{l}_2}{\left( {\mathrm{S}{\mathrm{O}_4}} \right)_3}

and chrome alum is heated with excess of

\mathrm{N}{\mathrm{a}_2}{\mathrm{O}_2}

and filtered. The materials obtained are:

View answer and explanation

Correct option: C

A yellow filtrate and a brown residue

The correct answer is C (

{\mathrm{N}_2}\left( {1\,\mathrm{g}\,\mathrm{atom}} \right) \to {\mathrm{N}_2}\left( {8\,\mathrm{g}\,\mathrm{atom}} \right)

) because compressing a gas reduces its entropy, leading to a negative change in entropy (ΔS).

More Questions from d & f- BLOCK ELEMENTS