For a chemical reaction A + B ? C + D

(ΔrHΘ=80kJmol1) the entropy change ΔrSΘ depends on the temperature T (in K) as ΔrSΘ=2T(JK1mol1).

Minimum temperature at which it will become spontaneous is-------------K. (Integer)

0 2 Views | Posted 3 months ago
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    Answered by

    Payal Gupta | Contributor-Level 10

    3 months ago

    ΔrHo=80kJmol1

    ΔrSo=2TkJmol1

    For a reaction to be spontaneous;

    ΔrSo>ΔrHoT

    T>ΔrHoΔrSo

    T>80×1032T

    T2>40000K

    T>200K

    So, minimum T at which reaction will be spontaneous is 200 K.

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