A reaction in which a, b, and c react to form products is zero order in a, one-half order in b, and second order in

c. by what factor does the reaction rate change if the concentration of a is doubled? 1 by what factor does the reaction rate change if the concentration of b is doubled? 1.4 by what factor does the reaction rate change if the concentration of c is doubled? 4

Respuesta :

Answer: a) 1

b) 1.414

c) 4

Explanation: Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

[tex]A+B+C\rightarrow products[/tex]

[tex]Rate=k[A]^0[B]^\frac{1}{2}[C]^2[/tex]

a)  [tex]Rate^'=k[2A]^0[B]^\frac{1}{2}[C]^2[/tex]

[tex]Rate^'=k[2]^0[A]^0[B]^\frac{1}{2}[C]^2[/tex]

[tex]Rate^'=1\times Rate[/tex]

b) [tex]Rate^'=k[A]^0[2B]^\frac{1}{2}[C]^2[/tex]

[tex]Rate^'=k[A]^0[2]^\frac{1}{2}[B]^\frac{1}{2}[C]^2[/tex]

[tex]Rate^'=[2]^\frac{1}{2}Rate[/tex]

[tex]Rate^'=1.414\times Rate[/tex]

c) [tex]Rate^'=k[A]^0[B]^\frac{1}{2}[2C]^2[/tex]

[tex]Rate^'=k[A]^0[B]^\frac{1}{2}[2]^2[C]^2[/tex]

[tex]Rate^'=[2]^2Rate[/tex]

[tex]Rate^'=4\times Rate[/tex]