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A mixture of H2, N2 and NH3 with molar i...

A mixture of `H_2, N_2` and `NH_3` with molar is concentrations `5.0 xx 10^(-3) mol L^(-1), 4.0 xx 10^(-3) mol L^(-1)` at and `2.0 x 10^(-3) mol L^(-1)` respectively was prepared and heated to 500 K. The value of `K_c` for the reaction :
`3H_(2(g)) + N_(2(g))

Text Solution

Verified by Experts

Reaction quotient, `Q_c` for the reaction,
`N_(2(g)) + 3H_(2(g)) `Q_c = ([NH_3]^2)/([N_2][H_2]^3)`
`[NH_3] = 2.0 xx 10^(-3) mol L^(-1), [H_2] = 5.0 xx 10^(-3) mol L^(-1)`
`[N_2] = 4.0 xx 10^(-3) mol L^(-1)`
`Q_c = ((2.0 xx 10^(-3))^2)/((4.0 xx 10^(-3))(5.0 xx 10^(-3))^3) = 8.0 xx 10^3`
`K_c = 60`
Since `Q_c gt K_c` reaction will go in the left direction and ammonia will decompose.
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