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Question
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
2H2 + O2 → 2H2O
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Solution
Hydrogen with oxygen
2H2[ g] + O2[g] + 2H2O[l]
The gas (products) changes to liquid (reactants) state.
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