Which among the following changes are exother | vedclass

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(B) An exothermic process is one that releases heat into the surroundings, while an endothermic process absorbs heat from the surroundings.$(a)$ Decom

Vedclass · Accepted Answer

Exothermic: $(b), (c)$; Endothermic: $(a), (d)$

Vedclass · Answer

(B) An exothermic process is one that releases heat into the surroundings, while an endothermic process absorbs heat from the surroundings.$(a)$ Decomposition of ferrous sulphate $(2FeSO_4(s) \xrightarrow{\Delta} Fe_2O_3(s) + SO_2(g) + SO_3(g))$ requires heat input, so it is endothermic.$(b)$ Dilution of sulphuric acid is a highly exothermic process as it releases a large amount of heat.$(c)$ Dissolution of sodium hydroxide in water $(NaOH(s) ightarrow Na^+(aq) + OH^-(aq) + 	ext{Heat})$ is an exothermic process.$(d)$ Dissolution of ammonium chloride in water $(NH_4Cl(s) + 	ext{Heat} ightarrow NH_4^+(aq) + Cl^-(aq))$ absorbs heat, so it is endothermic.Therefore, $(b)$ and $(c)$ are exothermic, while $(a)$ and $(d)$ are endothermic.

Which among the following changes are exothermic or endothermic in nature?
$(a)$ Decomposition of ferrous sulphate
$(b)$ Dilution of sulphuric acid
$(c)$ Dissolution of sodium hydroxide in water
$(d)$ Dissolution of ammonium chloride in water

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Which among the following changes are exothermic or endothermic in nature?$(a)$ Decomposition of ferrous sulphate$(b)$ Dilution of sulphuric acid$(c)$ Dissolution of sodium hydroxide in water$(d)$ Dissolution of ammonium chloride in water