For the reaction, H 2(g)+ I 2(g) leftharpoons 2 HI (g) ; KC=57.0 text at 700 K text . The molar concentration of [ H 2]=0.10 M, [ I 2]=0.20 M and [ HI ]=0.40 M. The reaction quotient, QC of the reaction is

Question

For the reaction, H 2(g)+ I 2(g) leftharpoons 2 HI (g) ; KC=57.0 text at 700 K text . The molar concentration of [ H 2]=0.10 M, [ I 2]=0.20 M and [ HI ]=0.40 M. The reaction quotient, QC of the reaction is (A) 10.0 (B) 7.0 (C) 8.0 (D) 12.0

Tardigrade Admin · Accepted Answer

Consider the gaseous reaction of H 2 with I 2. H 2(g)+ I 2(g) leftharpoons 2 HI (g) ; KC=57.0 text at 700 K ⇒ QC=([ HI ]2/[ H 2][ I 2])=((0.40)2/(0.10) ×(0.20))=8.0

Q. For the reaction,
$H_{2} (g) + I_{2} (g) ⇌ 2 H I (g); K_{C} = 57.0 at 700 K .$
The molar concentration of $[H_{2}] = 0.10 M$ ,
$[I_{2}] = 0.20 M$ and $[H I] = 0.40 M$ .
The reaction quotient, $Q_{C}$ of the reaction is

$10.0$

$7.0$

$8.0$

$12.0$

Consider the gaseous reaction of $H_{2}$ with $I_{2}$ .
$H_{2} (g) + I_{2} (g) ⇌ 2 H I (g); K_{C} = 57.0 at 700 K$
$\Rightarrow Q_{C} = \frac{[ H I ] ^{2}}{[ H _{2} ] [ I _{2} ]} = \frac{( 0.40 ) ^{2}}{( 0.10 ) \times ( 0.20 )} = 8.0$

Q. For the reaction, H2​(g)+I2​(g)⇌2HI(g);KC​=57.0 at 700K. The molar concentration of [H2​]=0.10M, [I2​]=0.20M and [HI]=0.40M. The reaction quotient, QC​ of the reaction is

10.0

7.0

8.0

12.0