For the reaction R→ P, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 minutes. The average rate of reaction is

Question

For the reaction R→ P, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 minutes. The average rate of reaction is (A) 4 × 10-4 M min -1 (B) 4 × 104 M min - 1  (C) 3 × 10-4 M min -1 (D) 3 × 104 M min -1

Tardigrade Admin · Accepted Answer

Average rate =(Δ[R]/Δ t) =([R]2-[R]1/t2 -t1) = - (0,02-0,03/25) =((-0.01)/25) =4×10-4 M min -1

Q. For the reaction $R \to P,$ the concentration of a reactant changes from $0.03 M$ to $0.02 M$ in $25$ minutes. The average rate of reaction is

$4 \times 1 0^{- 4} M mi n^{- 1}$

$4 \times 1 0^{4} M mi n^{- 1}$

$3 \times 1 0^{- 4} M mi n^{- 1}$

$3 \times 1 0^{4} M mi n^{- 1}$

$A v er a g e r a t e = \frac{Δ [ R ]}{Δ t} = \frac{[ R ] _{2} - [ R ] _{1}}{t _{2} - t _{1}}$
$= - \frac{0 , 02 - 0 , 03}{25} = \frac{( - 0.01 )}{25} = 4 \times 1 0^{- 4} M mi n^{- 1}$

Q. For the reaction R→P, the concentration of a reactant changes from 0.03M to 0.02M in 25 minutes. The average rate of reaction is

4×10−4Mmin−1

4×104Mmin−1

3×10−4Mmin−1

3×104Mmin−1