Question

Given the reaction between 2 gases represented by `A_(2) and B_(2)` to give the compound AD(g).
`A_(2)(g)+B_(2)(g)hArr2AB(g).` At equilibrium, the concentration
`of A_(2)=3.0xx10^(-3)M`
`of B_(2)=4.2xx10^(-3)M`
`of AB=2.8xx10^(-3)M`
If the reaction takes place in a scaled vassel at `527^(@)C,` then the value of `K_(c)` will be
A. `2.0`
B. `1.9`
C. `0.62`
D. `4.5`

Answer 1

Correct Answer - C
`A_(2)+B_(2)hArr2AB`
`K_(C)=((2.8xx10^(-3))^(2))/(3xx10^(-3)xx4.2xx10^(-3))=((2.8))/(3xx4.2)=0.62`