1.

The DeltaH_(f)^(@) of O_(3),CO_(3),NH_(3) and HI are 142.2, -393.3, -46.2 and +25.9 kJ per mol, respectively. The order of their increasing stabilities will be

Answer»

`O_(3),CO_(2),NH_(3),HI`
`CO_(2),NH_(3),HI,O_(3)`
`O_(3),HI,NH_(3),O_(2)`
`NH_(3),HI,CO_(2),O_(3)`

Solution :Energy absorbed `PROP` STABILITY of COMPOUND
Energy released `prop` stability of compound
`142.2 gt 25.9 gt -46.2 gt -393.2`
i.e. `O_(3) gt HI gt NH_(3) gt CO_(2)`


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