For the reaction `NH_(4)^(+)+OCN^(-)rarrNH_(2)CONH_(2),` rthe probable mechanism is,
`NH_(4)^(+)+OCN^(-)hArrNH_(4)OCN" "` (fast)
and `NH_(4)OCNrarrCONH_(2)" "` (slow)
The rate law will be :

The reaction NH_(4)^(+)+ OCN^(-) rarr OC (NH_(2))_(2) , proceeds through the following mechanism. NH_(4)^(+)+OCN^(-) overset(k_(eq))rarr NH_(4) OCN (fast) NH_(4)OCN overset(k) rarr OC(NH_(2))_(2) (slow) The rate constant of the reaction is

Draw structure NH_(4)OCN

The rate expresison for the reaction: NH_(4)CNO hArr NH_(2)CONH_(2) can be derived form the mechanism: (i) NH_(4)CNO underset(k_(2))overset(k_(1))hArr NH_(4)NCO ("Fast") (ii) NH_(4)CNO overset(k_(3))rarrNH_(3) + HNCO ("fast") (iii) NH_(3)+HNCo overset(k_(4))rarr NH_(2)CONH_(2) (Slow) Which of the following statement (s) is/are correct about the rate expresison?

The rate expresison for the reaction: NH_(4)CNO hArr NH_(2)CONH_(2) can be derived form the mechanism: (i) NH_(4)CNO underset(k_(2))overset(k_(1))hArr NH_(4)NCO ("Fast") (ii) NH_(4)CNO overset(k_(3))rarrNH_(3) + HNCO ("fast") (iii) NH_(3)+HNCo overset(k_(4))rarr NH_(2)CONH_(2) (Slow) Which of the following statement (s) is/are correct about the rate expresison? a. (d_(["urea]))/(dt) = (k_(1)k_(3))/(k_(2))[NH_(4)NCO] b. (d_(["urea]))/(dt) = (k_(1)k_(3))/(k_(2)k_(4))[NH_(4)NCO] c. (d_(["urea]))/(dt) = k[NH_(4)NCO] d. (d_(["urea]))/(dt) = (k_(1) xx k_(2))/(k_(3) xx k_(4))[NH_(4)NCO]

For the reaction NH_(4)HS(s)rArrNH_(3)(g)+H_(2)S(g) ,K_(p)=0.09 . The total pressure at equilibrum is :-

The percentage of nitrogen in urea (NH_(2)CONH_(2)) , is