Answer to Question #108285 in General Chemistry for Terry

Question

What is the overall reaction order of the following if the rate constant was found to be k = 0.313 M–2s–1?

2 H2 + 2 NO → 2 H2O + N2

Answer 1

To determine the reaction order, it is necessary to look at the dimension of the rate constant, which is expressed by the general formula: (L^n-1) / ( s • mol^n-1) , where n - the reaction order. Thus, the order of this reaction is 3, because n will be equal to 3, when we add 2 + 1 , where 2 - it is the concentration dimension (M) according to the condition of the question), 1 - according to the formula. Comment: L/mol is equal to M^-1.

Answer: order of this reaction (n) is 3.