Teaching DSSSB PGT Mock Test 2025 Chemistry Thermodynamics

The work done by 3.4 g H2O2(l) on decomposition to H2O2(l) and O2(g) against a pressure of 1 atm at 25°C: 

1
-3.2 × 102 J 
2
+3.2 × 102 J
3
1.24 × 102 J
4
-1.12 × 102 J  
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