If 1.0 mole of I2 is introduced into 1.0 litre flask at 1000 K, at equilibrium (Kc=10-6), which one is correct?

Question

If 1.0 mole of I2 is introduced into 1.0 litre flask at 1000 K, at equilibrium (Kc=10-6), which one is correct? (A) [ I 2( g )]>[ I -( g )] (B) [ I 2( g )]<[ I -( g )] (C) [ I 2( g )]=[ I -( g )] (D) [ I 2( g )]=(1/2)[ I -( g )]

Tardigrade Admin · Accepted Answer

underset text 1 -xI2 <=> underset text 2x 2 I- Kc = ((2x)2/(1-x)) = 10-6 It shows that (1 - x) < 2x

Q. If $1.0$ mole of $I_{2}$ is introduced into $1.0$ litre flask at $1000 K$ , at equilibrium $(K_{c} = 1 0^{- 6})$ , which one is correct?

$[I_{2} (g)] > [I^{-} (g)]$

$[I_{2} (g)] < [I^{-} (g)]$

$[I_{2} (g)] = [I^{-} (g)]$

$[I_{2} (g)] = \frac{1}{2} [I^{-} (g)]$

$1 -x I X_{2} 2x 2 I X^{-}$
$K_{c} = \frac{( 2 x ) ^{2}}{( 1 - x )} = 1 0^{- 6}$
It shows that (1 - x) < 2x

Q. If 1.0 mole of I2​ is introduced into 1.0 litre flask at 1000K, at equilibrium (Kc​=10−6), which one is correct?

[I2​(g)]>[I−(g)]

[I2​(g)]<[I−(g)]

[I2​(g)]=[I−(g)]

[I2​(g)]=21​[I−(g)]