Question

plzz help............​

Answer 1

Answer:

(b) dilution of sulphuric acid that is the correct answer plz mark me brainliest ☺️

Answer 2

Answer:

(b) Dilution of sulphuric acid

Explanation:

Dilution of sulphuric acid is highly exothermic reaction. It releases large amount of heat. If it's not carefully done , it may cause to explosion of the beaker where acid is concentrated.

About other options

• (a) Decomposition of ferrous sulphate : It is an endothermic reaction. We have to heat the ferrous sulphate crystals to decompose it into Ferric oxide , sulphur dioxide and sulphur trioxide .

Chemical Reaction is :

$\sf 2FeSO_{4} (s) \xrightarrow{Heat} Fe_{2}O_{3}(s) + SO_{2}(g) + SO_{3}(g)$

• (c) Dilution of ammonium chloride in water is also an endothermic reaction.

Chemical reaction :

$\sf NH_{4}Cl (s)\xrightarrow{Heat \: \: ; \: \: water }NH_{4} ^{+} (aq)+ Cl^{-} (aq)$

• (d) Since one of the option is exothermic i.e. (b) so (d) none of these is never correct .