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A mixture of SO_(3) , SO_(2) and O_(2) gases is maintained at equilibrium in 10 litre flask at a temperature at which K_(c) " for the reaction ," 2SO_(2) (g) + O_(2) (g) hArr 2 SO_(3) (g)"is100 mol"^(-1)litre. At equilibrium . (a) if no. of moles of SO_(3) and SO_(2) in the flask are same, how many moles of O_(2) are present ? (b) if no. of moles of SO_(3) in the flask are twice the number of moles of SO_(2) in the flask are twice the number of moles of SO_(2), how many moles O_(2) are present ?

Answer» <html><body><p></p>Solution :` 2 SO_(2) (g) + O_(2) (g) hArr 2 SO_(3) ," " K_(c) = ([SO^(2)])/([SO_(2)]^(2)[O_(2)] = 100)(Given)` <br/> (a) As ` [ SO_(3)] = [ SO_(2)] ,:. 100 = 1/([O_(2)]) or [O_(2)] = 1/ 100 molL^(-1)` <br/>`:. O_(2) " <a href="https://interviewquestions.tuteehub.com/tag/present-1163722" style="font-weight:bold;" target="_blank" title="Click to know more about PRESENT">PRESENT</a> in 10 <a href="https://interviewquestions.tuteehub.com/tag/litre-1075864" style="font-weight:bold;" target="_blank" title="Click to know more about LITRE">LITRE</a> " = 1/100 <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a> 10 = 0*1 ` <a href="https://interviewquestions.tuteehub.com/tag/mole-1100299" style="font-weight:bold;" target="_blank" title="Click to know more about MOLE">MOLE</a> <br/>(<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>)If ` [ SO_(3) ] = 2 [ SO_(2)] , i.e, ([SO_(3)])/([ SO_(2)] )= 2 " then "100= 4/ ([O_(2)] ) or [O_(2)] = 4/100 "mol"L^(-1)` <br/> ` :. O_(2) " present in 10 litre "= 4/100 xx 10= 0*4` mole</body></html>


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