The rate constant for the decomposition of nitrogen dioxide no2(g) latex: \longrightarrow⟶ no (g) + 1/2 o2(g) with a laser beam is 1.95 1/mlatex: \cdot⋅ min. find the time, in seconds, needed to decrease 2.48 m of no2 to 0.97 m. hint: what is the order of the reaction? how can you determine that? units of k?

Answer :

The time taken by the reaction is 19.2 seconds.

The order of reaction is, second order reaction.

Explanation :

The general formula to determine the unit of rate constant is:

Unit of rate constant                           Order of reaction

                                       0

                                                             1

                                2

As the unit of rate constant is . So, the order of reaction is second order.

The expression used for second order kinetics is:

where,

k = rate constant =

t = time = ?

= final concentration = 0.97 M

= initial concentration = 2.48 M

Now put all the given values in the above expression, we get:

Therefore, the time taken by the reaction is 19.2 seconds.

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."