જો $N_2O$ ની સર્જન-એન્થાલ્પી $82\, kJ\, mol^{-1}$ હોય તો $N_2O$ ની સંસ્પંદન ઊર્જા ગણો.......$kJ\,mo{l^{ - 1}}$

$N \equiv N\,\left( {946\,kJ\,mo{l^{ - 1}}} \right)\,;\,N = N\,\left( {418\,kJ\,mo{l^{ - 1}}} \right)$

$O = O\,\left( {498\,kJ\,mo{l^{ - 1}}} \right)\,;\,N = O\,\left( {607\,kJ\,mo{l^{ - 1}}} \right)$;

Question

જો $N_2O$ ની સર્જન-એન્થાલ્પી $82\, kJ\, mol^{-1}$ હોય તો $N_2O$ ની સંસ્પંદન ઊર્જા ગણો.......$kJ\,mo{l^{ - 1}}$

$N \equiv N\,\left( {946\,kJ\,mo{l^{ - 1}}} \right)\,;\,N = N\,\left( {418\,kJ\,mo{l^{ - 1}}} \right)$

$O = O\,\left( {498\,kJ\,mo{l^{ - 1}}} \right)\,;\,N = O\,\left( {607\,kJ\,mo{l^{ - 1}}} \right)$;

Diffcult

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Solution

a
$\Delta_f H _{ N _2 O }\left(\right.$ પ્રાયોગિક) $=82\,kJ\,mol ^{-1}$

$N _2+\frac{1}{2} O _2 \longrightarrow N _2 O$

$( N \equiv N )+\frac{1}{2}( O = O ) \longrightarrow N = N = O$

$\Delta_f H^{\circ}=\Sigma B . E$ of recectants $-\Sigma B . E$ of products

$=\left[( N \equiv N )+\frac{1}{2}( O = O )\right]-[( N = N )+( N =0)]$

$=\left|946+\frac{1}{2}(498)\right|-[418+607 \mid=1195-1025$

$=170$

સસ્પંદન ઊર્જા $=82-170$

$=-88\, kJ\, mol ^{-1}$

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