Question

If $r=\frac{-3}{2}\frac{\Delta \left[A\right]}{\Delta t}=\frac{-5}{2}\frac{\Delta \left[B\right]}{\Delta t}=\frac{+7}{3}\frac{\left[\Delta C\right]}{\Delta t}$, which of the following is the corresponding reaction:

• A. $\frac{2}{3}A+\frac{2}{5}B\to \frac{3}{7}C$
• B. $\frac{2}{3}A+\frac{5}{2}B\to \frac{7}{3}C$
• C. $\frac{3}{2}A+\frac{5}{2}B\to \frac{7}{3}C$
• D. $\frac{7}{3}C+\frac{5}{2}B\to \frac{3}{2}A$

Answer 1

The correct option is A $\frac{2}{3}A+\frac{2}{5}B\to \frac{3}{7}C$

For the rate law ; $-\frac{3}{2}\frac{\Delta \left[A\right]}{\Delta t}=-\frac{5}{2}\frac{\Delta \left[B\right]}{\Delta t}=\frac{7}{3}\frac{\Delta \left[C\right]}{\Delta t}$, $A$ and $B$ are the reactants and $C$ is the product formed.

The equation can be written as ; $\frac{2}{3}A+\frac{2}{5}B\to \frac{3}{7}C$