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The heat of combustion of solid benzoic acid at constant volume is (-321.30 ~kJ ) at (27^ C ). The heat of combustion at constant pressure is ((-321.30-x R ) kJ ), the value of (x ) is _______.

Correct answer

0

Step-by-step solution

aligned & C ₆ H ₅ COOH ( S )+ 15 2 O ₂( ~g ) 7 CO ₂( ~g )+3 H ₂ O ( ) & H = U + n _ g RT & =-321.30- 1 2 R 100 300 & =(-321.30-150 R ) kJ aligned

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