Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  •  For the given first order reaction A  B the half life of the reaction is <img alt="0.65/9 \ma

 For the given first order reaction A \rightarrow B the half life of the reaction is 0.65/9 \mathrm{~min} the ratio of the initial concentration of reactant to the concentration of reactant at time 3.0min will be equal to {Round of to Next integer}

Option: 1

10^7


Option: 2

10^8


Option: 3

10^{1.4}


Option: 4

10^{15}


Answers (1)

best_answer

\mathrm{\begin{aligned} & k=\frac{2.303}{t} \log \left[\frac{A_0}{A_t}\right] \\ & \frac{0.693}{t \frac{1}{2}}=\frac{2.303}{t} \log \left(\frac{A_0}{A_t}\right) \\ & \frac{0.693}{0.6519 \min }=\frac{2.303}{3 \min } \log \left(\frac{A_0}{A_t}\right) \\ & \log \left(\frac{A_0}{A_t}\right)=\frac{0.693 \times 3}{2.303 \times 0.6519} \\ & \frac{A_0}{A_t}=10^{1.4} \end{aligned} }

Posted by

vishal kumar

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2026: NIT Rourkela records higher closing ranks in CSE, ECE, AI; core engineering branches stable
anam-khan

JEE Main 2026: IIT Delhi’s CSE, EE most opted; last 2 year’s closing ranks for all categories
anam-khan

Must provide CBSE 11th registration numbers to JEE Mains aspirants, board tells schools

Latest Question