1.

The standard enthalpies of formation of A(NH_(3)),B(CO_(2)),C(HI) and D(SO_(2)) are respectively -46.19,-393.4, +24.94 and -296.9 kJ mol^(-1). The increasing order of their stability is

Answer»

`BltDltAltC`
`CltAltDltB`
`DltBltCltA`
`AltCltDltB`

SOLUTION :More NEGATIVE the value of enthalpies of formation, more STABLE the PRODUCTS.


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