Question

X moles of phosgene gas is allowed to attain equilibrium with its gaseous decomposition products in a 1 litre vessel for what value of x half the chlorine atoms in the equilbrium mixture remain with phosgene :
($K_C$ for phosgene decomposition = 3 )

• A. 4
• B. 3
• C. 8
• D. 6

Answer 1

The correct option is D 6

$\underset{xx-x/2}{COC{l}_2}\to \underset{0x/2}{CO}+\underset{0x/2}{C{l}_2}$

we can write expression for $K_c$

$K_c=\frac{\frac{x}{2}.\frac{x}{2}}{\frac{x}{2}}=3$

$x=6$