# If the temperature and pressure remain unchanged the volume of ${O}_{2}$obtained by the decomposition of a certain volume of $S{O}_{2}$ will be

Triple the volume of $S{O}_{2}$

Half the volume of $S{O}_{2}$

Equal to the volume of $S{O}_{2}$

One third the volume of $S{O}_{2}$

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