In a reaction, 2 x arrow y, the concentration of x decreases from 3.0 M to 1.5 M in 4 min. The rate of the reaction is

Question

In a reaction, 2 x arrow y, the concentration of x decreases from 3.0 M to 1.5 M in 4 min. The rate of the reaction is (A) 0.187 M min -1 (B) 1.87 M min -1 (C) 3.75 × 10-1 M min -1 (D) 0.75 M min -1

Tardigrade Admin · Accepted Answer

Rate of reaction =-(1/2) (d[x]/d t) =-(1/2) ([1.5-3.0]/4) =(1.5/8)=0.1875 M min -1

Q. In a reaction, $2 x \to y$ , the concentration of $x$ decreases from $3.0 M$ to $1.5 M$ in $4 min$ . The rate of the reaction is

$0.187 M min^{- 1}$

$1.87 M min^{- 1}$

$3.75 \times 1 0^{- 1} M min^{- 1}$

$0.75 M min^{- 1}$

Rate of reaction $= - \frac{1}{2} \frac{d [ x ]}{d t}$
$= - \frac{1}{2} \frac{[ 1.5 - 3.0 ]}{4}$
$= \frac{1.5}{8} = 0.1875 M min^{- 1}$

Q. In a reaction, 2x→y, the concentration of x decreases from 3.0M to 1.5M in 4min. The rate of the reaction is

0.187Mmin−1

1.87Mmin−1

3.75×10−1Mmin−1

0.75Mmin−1