Calculate the standard internal change in multiples of -10^(2)KJ for the reaction OF_(2(g)) + H_(2)O_((g)) rarr O_(2(g)) + 2HF_((g)) at 298K. The standard enthalpies of formation of OF_(2(g)), H_(2)O_((g)), HF_((g)) " are " +20, -250 and -270KJ "mole"^(-1)

Calculate the standard internal change in multiples of -10^(2)KJ for t

1.	Calculate the standard internal change in multiples of -10^(2)KJ for the reaction OF_(2(g)) + H_(2)O_((g)) rarr O_(2(g)) + 2HF_((g)) at 298K. The standard enthalpies of formation of OF_(2(g)), H_(2)O_((g)), HF_((g)) " are " +20, -250 and -270KJ "mole"^(-1)
Answer» Solution :`Delta H = Delta H_(f_(O_(2))) + 2 Delta H_(f_(HF)) - Delta H_(f_(OF_(2))) - Delta H_(f_(H_(2)O)` `= 0 + 2 xx (-270) - (20) - (-250) = -310` `Delta E = Delta H - Delta NG RT` `= -310 -1 xx 8.314 xx 0.298 = -312.5`