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From the following data i. H(2)(g)+CO(...

From the following data
i. `H_(2)(g)+CO_(2)(g) hArr H_(2)O(g)+CO(g), K_(2000 K)=4.40`
ii. `2H_(2)O(g) hArr 2H_(2)(g)+O_(2)(g), K_(2000 K)^(I)=5.31xx10^(-10)`
iii. `2CO(g)+O_(2)(g) hArr 2CO_(2)(g), K_(1000 K)=2.24xx10^(22)`
Show whether reaction (iii) is exothermic or endothermic.

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Verified by Experts

The correct Answer is:
reaction is exothermic.
Equation (iii)`=-[2xx(i)+(ii)]`
`therefore K_(20000_(iii)=(1)/(K_(1)^(2)K_(2))=(1)/((4.4)^(2)xx5.31xxxx10^(-10)))=9.7xx10^(7)`
`because TuparrowKdownarrow rArr` reaction is exothermic.
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