Figure out the number of reactions among the following which have ΔH equal to ∆U i. N2g+3H2g⟶2NH3g ii. 2HIg⟶H2g+I2g iii. Cs+O2g⟶CO2g iv. 2NO2g⟶N2O4g v. 2SO2g+O2g⟶2SO3g vi. CH4g+2O2g⟶CO2g+2H2Ol vii. 2C4H10g+13O2g→8CO2g+10H2Ol viii. H2g+Br2g⟶2HBrg

Question

Figure out the number of reactions among the following which have $Δ H$ equal to $∆ U$

i. $N_{2} (g) + 3 H_{2} (g) ⟶ 2 {NH}_{3} (g)$

ii. $2 HI (g) ⟶ H_{2} (g) + I_{2} (g)$

iii. $C (s) + O_{2} (g) ⟶ {CO}_{2} (g)$

iv. $2 {NO}_{2} (g) ⟶ N_{2} O_{4} (g)$

v. $2 {SO}_{2} (g) + O_{2} (g) ⟶ 2 {SO}_{3} (g)$

vi. ${CH}_{4} (g) + 2 O_{2} (g) ⟶ {CO}_{2} (g) + 2 H_{2} O (l)$

vii. $2 C_{4} H_{10} (g) + 13 O_{2} (g) \to 8 {CO}_{2} (g) + 10 H_{2} O (l)$

viii. $H_{2} (g) + {Br}_{2} (g) ⟶ 2 HBr (g)$

Correct Answer

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