Let xg is burnt
Moles=280x heat released by 280xmole=2.5×0.45kJ heat released by 1 mole =x2.5×0.45×280kJ
ΔH=ΔU+ΔngRT
ΔH≃ΔU
9=x2.5×280×0.45
x=35g
A gas ( Molar mass =280gmol−1) was burnt in excess O2 in a constant volume calorimeter and during combustion the temperature of calorimeter increased from 298.0K to 298.45K. If the heat capacity of calorimeter is 2.5kJK−1 and enthalpy of combustion of gas is 9kJmol−1 then amount of gas burnt is____g.
Held on 27 Jul 2022 · Verified 6 Jul 2026.
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