For which of the following process- the value of -H negative-I N2-O2-2NOII N2-3H22NH3III 2SO2-O22SO3IV H2-I22HI

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Standard XII

Chemistry

Enthalpy of Solution

For which of ...

Question

For which of the following process, the value of $Δ$ H negative?
I) $N_{2} + O_{2} \to 2 N O$
II) $N_{2} + 3 H_{2} F e + M o - --- \to 2 N H_{3}$
III) $2 S O_{2} + O_{2} V_{2} O_{5} - -- \to 2 S O_{3}$
IV) $H_{2} + I_{2} p t - \to 2 H I$

I and II are correct

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II and III are correct

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III and IV are correct

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I and IV are correct

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Solution

The correct option is B II and III are correct
$Δ H$ is negative for the formation of ammonia and sulphur trioxide.
$N_{2} + 3 H_{2} F e + M o \to 2 N H_{3}; Δ H = - v e$
$2 S O_{2} + O_{2} V_{2} O_{5} \to 2 S O_{3}; Δ H = - v e$

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For which of the following process, the value of ΔH negative?I) N2+O2→2NOII)N2+3H2Fe+Mo−−−−→2NH3III)2SO2+O2V2O5−−−→2SO3IV)H2+I2pt−→2HI

The correct option is B II and III are correctΔH is negative for the formation of ammonia and sulphur trioxide.N2+3H2Fe+Mo→2NH3; ΔH=−ve2SO2+O2V2O5→2SO3; ΔH=−ve

For which of the following process, the value of $Δ$ H negative?
I) $N_{2} + O_{2} \to 2 N O$
II) $N_{2} + 3 H_{2} F e + M o - --- \to 2 N H_{3}$
III) $2 S O_{2} + O_{2} V_{2} O_{5} - -- \to 2 S O_{3}$
IV) $H_{2} + I_{2} p t - \to 2 H I$

The correct option is B II and III are correct
$Δ H$ is negative for the formation of ammonia and sulphur trioxide.
$N_{2} + 3 H_{2} F e + M o \to 2 N H_{3}; Δ H = - v e$
$2 S O_{2} + O_{2} V_{2} O_{5} \to 2 S O_{3}; Δ H = - v e$