$\overline{){\mathbf{rate}}{\mathbf{=}}{\mathbf{k}}{{\mathbf{\left[}}{\mathbf{A}}{\mathbf{\right]}}}^{{\mathbf{x}}}{{\mathbf{\left[}}{\mathbf{B}}{\mathbf{\right]}}}^{{\mathbf{y}}}{{\mathbf{\left[}}{\mathbf{C}}{\mathbf{\right]}}}^{{\mathbf{z}}}}$

where:

**rate** = initial rate

**k** = rate constant

**[A], [B], [C]** = reactant concentration

**x, y, z** = reaction order

**Calculate the order of the reaction with respect to A.**

Look for the data where the concentration of **A changes** while the concentration of **B and C remains the same**.

__Trial [A](M) [B](M) [C](M) Initial rate (M/s) __

1 0.50 0.50 0.50 1.5 x 10^{–4}

2 0.50 0.50 1.50 4.5 x 10^{–4}

3 1.00 0.50 0.50 6.0 x 10^{–4}

4 1.00 1.00 0.50 6.0 x 10^{–4}

For the reaction

A + B + C → D + E

the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected:

Trial [A](M) [B](M) [C](M) Initial rate (M/s)

1 0.50 0.50 0.50 1.5 x 10^{-4}

2 0.50 0.50 1.50 4.5 x 10^{-4}

3 1.00 0.50 0.50 6.0 x 10^{-4}

4 1.00 1.00 0.50 6.0 x 10^{-4}

a. Find the reaction order with respect to A.

b. Find the reaction order with respect to B.

c. Find the reaction order with respect to C.

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