Consider the following reactions- In which case the formation of product is favoured by decrease in pressure-1 CO2g-Cs - 2COg- - H-172-5 kJ2 N2g-3H2g - 2NH3g- - H-91-8 kJ3 N2g-O2g - 2NOg- - H-181 kJ4 2H2Og - 2H2g-O2g- - H-484-6 kJ

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Calorimetry

Consider the ...

Question

Consider the following reactions. In which case the formation of product is favoured by decrease in pressure?
(1) $C O_{2} (g) + C (s) \to 2 C O (g)$ ; $Δ H = + 172.5$ kJ
(2) $N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)$ ; $Δ H = - 91.8$ kJ
(3) $N_{2} (g) + O_{2} (g) \to 2 N O (g)$ ; $Δ H = + 181$ kJ
(4) $2 H_{2} O (g) \to 2 H_{2} (g) + O_{2} (g); Δ H = 484.6$ kJ

2,3

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N_{2} (g) + O_{2} (g) \to 2 N O (g)

Δ H = 181

2 C O_{2} (g) \to 2 C O (g) + O_{2} (g); Δ H = 566

H_{2} (g) + I_{2} (g) \to 2 H I (g); Δ H = - 94

H_{2} (g) + F_{2} (g) \to 2 H F (g); Δ H = - 541

C (s) + O_{2} (g) \to C O_{2} (g), Δ H = - 94

2 C O (g) + O_{2} \to 2 C O_{2} (g), Δ H = - 135.2

C O (g)

C (s) + O_{2} (g) \to C O_{2} (g); Δ H = - 94 k c a l

2 C O (g) + O_{2} (g) \to 2 C O_{2} (g); Δ H = - 135.2 k c a l

C O (g)

C_{(s)} + O_{2 (g)} \to C O_{2 (g)};

Δ H = - 394 k J

2 H_{2 (g)} + O_{2 (g)} \to 2 H_{2} O_{(l)};

Δ H = - 568 k J

C H_{4 (g)} + 2 O_{2 (g)} \to C O_{2 (g)} + 2 H_{2} O_{(l)};

Δ H = - 394 k J

C H_{4}

Δ H

Δ U

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