Rate equation for the reaction ltbr `2SO_(2)(g)+O_(2)(g) overset(Pt)to2SO_(3)(g)` is
`r=k[SO_(2)][SO_(3)]^(-1//2)`. On increasing the conc. Of `SO_(3),` the rate of the reaction, would

Options

A. increases
B. decreases
C. become twice
D. not affected

Answer

B

Explanation

Given, `r=k[SO_(2)][SO_(3)]^(-1//2)`
the negative power of concentration of `SO_(3)` indicates that on increasing the concentration of `SO_(3)`, the rate of reaction decreases.