When conc. H_{2}SO_{4} is heated with P_{2}O_ | vedclass

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Question

(A) $P_{2}O_{5}$ is a powerful dehydrating agent. When concentrated $H_{2}SO_{4}$ is heated with $P_{2}O_{5}$,it undergoes dehydration to form sulphur

Vedclass · Accepted Answer

sulphur trioxide

Vedclass · Answer

(A) $P_{2}O_{5}$ is a powerful dehydrating agent. When concentrated $H_{2}SO_{4}$ is heated with $P_{2}O_{5}$,it undergoes dehydration to form sulphur trioxide $(SO_{3})$.The chemical reaction is as follows:$2H_{2}SO_{4} + P_{2}O_{5} \rightarrow 2SO_{3} + 2H_{3}PO_{4}$ (or $2H_{2}SO_{4} + 2P_{2}O_{5} \rightarrow 2SO_{3} + 4HPO_{3}$).

When conc. $H_{2}SO_{4}$ is heated with $P_{2}O_{5}$,the acid is converted into

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