If 100 mole of \(\mathrm{H_2O_2}\) decompose at 1 bar and 300 K, the work done (kJ) by one mole of \(\mathrm{O_2(g)}\) as it expands against 1 bar pressure is :
\(2\mathrm{H_2O_2(l)} \rightleftharpoons 2\mathrm{H_2O(l)} + \mathrm{O_2(g)}\)
(\(R = 8.3\ \mathrm{J\,K^{-1}\,mol^{-1}}\))
\(2\mathrm{H_2O_2(l)} \rightleftharpoons 2\mathrm{H_2O(l)} + \mathrm{O_2(g)}\)
(\(R = 8.3\ \mathrm{J\,K^{-1}\,mol^{-1}}\))
Show Hint
- 62.25
- 124.50
- 249.00
- 498.00
The Correct Option is B
Solution and Explanation
Work done by the gas \(= p\Delta V = \Delta n_g RT = 50\times8.3\times300 = 124500\) J \(= 124.5\) kJ.
Answer: (2) 124.50
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