Question

Which of the following rate laws has an overall order of 0.5 for reaction involving substances $x$, $y$ and $z$.

• A. Rate $= K(C_{x})(C_{y})(C_{z})$
• B. Rate $= K(C_{x})^{0.5}(C_{y})^{0.5}(C_{z})^{0.5}$
• C. Rate $= K(C_{x})^{1.5}(C_{y})^{- 1}(C_{z})^{0}$
• D. Rate $= K(C_{x})(C_{z})^{n}/(C_{y})^{2}$

Answer 1

Answer: (C)

Rate $= K(C_{x})^{1.5}(C_{y})^{- 1}(C_{z})^{0}$

Answer 2

Order of reaction is sum of the power raised on concentration terms to express rate expression.