Assertion (A) `:` For the reaction
`N_(2)(g) +3H_(2)(g) hArr 2NH_(3)(g)`
unit of `K_(c) =L^(2) mol^(-2)`
Reason (R ) `:` For the reaction
`N_(2)(g)+3H_(2)(g) hArr 2NH_(3)(g)`
equilibrium constant `K_(c)=([NH_(3)]^(2))/([N_(2)]xx[H_(2)]^(3))`

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.

Answer

A

Explanation

`K_c=([NH_3]^2)/([N_2][H_2]^3)`
`K_c =("mol"^2 xxL xxL^3)/(L^2 xx"mol" xx"mol")=L^2 "mol"^(-2)`