Which is a convenient synthetic method for the preparation of SO2 ? (a) S8( s)+8 O2( g)+ heat →8

step 1 which is a convenient synthetic method for the preparation of sulphur dioxide. There are four ty

Which is a convenient synthetic method for the preparation...

Which is a convenient synthetic method for the preparation of $\mathrm{SO}_{2}$ ? (a) $\mathrm{S}_{8}(\mathrm{~s})+8 \mathrm{O}_{2}(\mathrm{~g})+$ heat $\rightarrow 8 \mathrm{SO}_{2}(\mathrm{~g})$ (b) $2 \mathrm{SO}_{3}(\mathrm{~g})+$ heat $\rightarrow 2 \mathrm{SO}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g})$ (c) $\mathrm{FeSO}_{3}(\mathrm{~s})+$ heat $\rightarrow \mathrm{FeO}(\mathrm{s})+\mathrm{SO}_{2}(\mathrm{~g})$ (d) $\mathrm{H}_{2} \mathrm{SO}_{3}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{l})+\mathrm{SO}_{2}(\mathrm{aq})$

Which is a convenient synthetic method for the preparation of $\mathrm{SO}_{2}$ ?
(a) $\mathrm{S}_{8}(\mathrm{~s})+8 \mathrm{O}_{2}(\mathrm{~g})+$ heat $\rightarrow 8 \mathrm{SO}_{2}(\mathrm{~g})$
(b) $2 \mathrm{SO}_{3}(\mathrm{~g})+$ heat $\rightarrow 2 \mathrm{SO}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g})$
(c) $\mathrm{FeSO}_{3}(\mathrm{~s})+$ heat $\rightarrow \mathrm{FeO}(\mathrm{s})+\mathrm{SO}_{2}(\mathrm{~g})$
(d) $\mathrm{H}_{2} \mathrm{SO}_{3}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{l})+\mathrm{SO}_{2}(\mathrm{aq})$

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Key Concepts

Thermal Decomposition

Thermal decomposition involves breaking down a compound by heating, which is a common strategy in inorganic synthesis to generate gases. In the context of SO2 production, heating a precursor that contains sulfur in an appropriate oxidation state (such as a metal sulfite) allows for a controlled release of SO2 gas without the complications of direct elemental oxidation.

Precursor Selection

Selecting the proper precursor is crucial for efficient and convenient synthesis. A solid precursor like a metal sulfite is often preferred because it decomposes readily upon heating to produce SO2, offering a more manageable and safer method compared to reactions that require high temperatures or the handling of reactive oxygen species.

Convenient Laboratory Synthesis Methods

In synthetic chemistry, methods that are safe, straightforward, and yield high-purity products are valued. The choice of a thermal decomposition reaction using an appropriate precursor exemplifies a convenient approach, as it typically operates under controlled conditions and minimizes the formation of unwanted byproducts, streamlining the isolation of the desired SO2.

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