(A) follows first order reaction : $A \to$ Products; concentration of A changes from 0.1 M to 0.025 M in 40 minutes. Find the rate of reaction of A when its concentration is 0.01 M.

(A) follows first order reaction, (A) $\to$ product.

The concentration of A changes from 0.1 to 0.025 M in 40 min.

Find the rate of reaction of A when the concentration of A is 0.01 M.

Join BYJU'S Learning Program

Gaseous reaction A → B + C follows first order kinetics. Concentration of A changes from 1 M to 0.25 M in 138.6 minutes. Find the rate of reaction when concentration of A is 0.1 M.

The correct option is B 10−3M/min2t1/2=138.6t1/2=138.62K=0.693t1/2R=K.[A]=0.69369.3×0.1=10−3M/min

Gaseous reaction A $\to$ B + C follows first order kinetics. Concentration of A changes from 1 M to 0.25 M in 138.6 minutes. Find the rate of reaction when concentration of A is 0.1 M.

The correct option is B $10^{- 3} M / m i n$
$2 t_{1 / 2} = 138.6 t_{1 / 2} = \frac{138.6}{2} K = \frac{0.693}{t_{1 / 2}} R = K . [A] = \frac{0.693}{69.3} \times 0.1 = 10^{- 3} M / m i n$