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Question
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
Options
`2"H"_2("l") + "O"_2 ("l") -> 2 "H"_2"O"("g")`
`2"H"_2("g") + "O"_2("l") -> 2"H"_2"O"("l")`
`2"H"_2("g") + "O"_2("g") -> 2"H"_2"O"("l")`
`2"H"_2("g") + "O"_2("g") -> 2"H"_2"O"("g")`
Solution
`2"H"_2("g") + "O"_2("g") -> 2"H"_2"O"("g")`
Explanation -
The reaction is carried upon strong heating. At this temperature, H2O formed is in gaseous state.
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