1.

In an exothermic reaction, heat is evolved, and system loses heat to the surrounding. For such system

Answer»

`q_p` will be negative
`Delta_(r) H` will be negative
`q_p` will be positive
`Delta_(r ) H` will be positive

Solution :Exothermic REACTIONS are those reactions which are accompanied by the EVOLUTION of HEAT.
e.g., `C_((s)) + O_(2(g)) to CO_(2(g)) + 393.5 "KJ"`
`H_(2(g)) + (1)/(2) O_(2(g)) to H_(2) O_((l)) 285.8 "kJ"`
`q_p and Delta_(r) H` are negative for exothermic reaction.


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