Comment on the thermodynamic stability of NO(g), given:
Comment on the thermodynamic stability of NO(g), given:
½ N2(g) + ½ O2 (g) ---> NO (g) ; Δr H0 =90 kj mol-1
NO (g) + ½ O2 (g) ----> NO2 (g); Δr H0 = -74 kjmol-1
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As energy is absorbed in the first reaction ,NO (g) is unstable. As energy is released in the second reaction, NO2 (g) is stable. Thus, unstable NO (g) changes into the stable NO2 (g)
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