JEE Main 2016 Chemistry question
If 100 mole of decompose at 1 bar and 300 K, the work is done (kJ) by one mole of as it expands against 1 bar pressure is:
Answer: (1)
Solution
Only the oxygen is gaseous — both the hydrogen peroxide and the water are liquids — so the change in the number of moles of gas is simply the oxygen produced. From the stoichiometry, 100 mol of gives
n(O_2) = = 50\ mol.
For expansion
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