One g sample of is decomposed ( ) in bomb calorimeter

CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics

Problem

One g sample of

NH_4NO_3

is decomposed (

NH_4NO_{3(s)} \to N_2O_{(g)} + 2H_2O_{(g)}

) in bomb calorimeter. The temperature of calorimeter increases by

6.12

K. The heat capacity of system is

1.23

kJ/g

^\circ

. The molar heat of decomposition is: (1)

-7.5

kJ (2)

+7.5

kJ (3)

-16.1

kJ (4)

+16.1