A 498 G Sample of Aniline (C₆H₅NH₂,molar Mass = 93 $\mathrm { mol } ^ { - 1 }$

A 4.98 g sample of aniline (C₆H₅NH₂,molar mass = 93.13 g $\mathrm { mol } ^ { - 1 }$ ) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ ${ } ^ { \circ } \mathrm { C } ^ { - 1 }$ .If the temperature rose from 29.5 °C to 69.8 °C,determine the value of $D _ { \mathrm { r } }$ U for the combustion of aniline.

A) +7.81 × 10³ kJ mol^-1
B) -3.20 × 10³ kJ mol^-1
C) +1.71 × 10³ kJ mol^-1
D) -1.71 × 10³ kJ mol^-1
E) -7.81 × 10³ kJ mol^-1