One mole of SO 3 was placed in a two litre vessel at a certain temperature- The following equilibrium was established in the vessel begin array -1- hline 2 - SO -3 g 2 SO -2 g - O -2 g Whlineendarray The equilibrium mixture reacted with 0-2 mole KMnO 4 in acidic medium hence- kc is-A- 0-125B- 1C- 0-5D- 0-25

The correct option is A 0.125[ amp; 2SO_3(g) amp;⇌ amp;2SO_2(g) amp;+ amp;O_2(g); Initial amp;1 amp; ...

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Standard XII

Chemistry

Hydrogen Peroxide

One mole of S...

Question

One mole of $S O_{3}$ was placed in a two litre vessel at a certain temperature. The following equilibrium was established in the vessel
$\begin{matrix} 2 S O_{3 (g)} ⇌ 2 S O_{2 (g)} + O_{2 (g)} \end{matrix}$
The equilibrium mixture reacted with 0.2 mole KMnO₄ in acidic medium hence, kc is,

0.5

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0.25

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0.125

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Solution

The correct option is C 0.125
$\begin{matrix} 2 S O_{3} (g) & ⇌ & 2 S O_{2} (g) & + & O_{2} (g) I n i t i a l & 1 & 0 & 0 E q u i l i b r i u m & 1 - 2 x & 2 x & x \end{matrix}$
Only $S O_{2}$ will be oxidised

So equivalent of $S O_{2} \equiv$ equivalent of $K m n O_{4}$
$2 x \times 2 \equiv 0.2 \times 5 2 x \equiv 0.5 X \equiv 0.25 K_{c} = \frac{({\frac{0.5}{2}}^{2} {\frac{0.25}{2}}^{2})}{(\frac{0.5}{2})} = 0.125$

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One mole of SO3 was placed in a two litre vessel at a certain temperature. The following equilibrium was established in the vessel 2 SO3(g)⇌2SO2(g)+O2(g) The equilibrium mixture reacted with 0.2 mole KMnO4 in acidic medium hence, kc is,

The correct option is C 0.1252SO3(g)⇌2SO2(g)+O2(g)Initial100Equilibrium1−2x2xx Only SO2 will be oxidised So equivalent of SO2≡ equivalent of KmnO4 2x×2≡0.2×52x≡0.5X≡0.25Kc=(0.5220.2522)(0.52)=0.125

One mole of $S O_{3}$ was placed in a two litre vessel at a certain temperature. The following equilibrium was established in the vessel
$\begin{matrix} 2 S O_{3 (g)} ⇌ 2 S O_{2 (g)} + O_{2 (g)} \end{matrix}$
The equilibrium mixture reacted with 0.2 mole KMnO₄ in acidic medium hence, kc is,