The half-life period $t_{1/2}$ for a first-order reaction is given by:

  • A
    $K$
  • B
    $\frac{1.303 \log 2}{K}$
  • C
    $\frac{2.303 \log 2}{K}$
  • D
    $\frac{9}{K}$

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Which one of the following graphs is not applicable for a $1^{st}$ order reaction $(R \rightarrow P)$?

When the value of rate constant $(k)$ is $2.0 \text{ min}^{-1}$, then what will be the half-life of the reaction $(t_{1/2})$ in seconds?

Consider a general first order reaction $A_{(g)} \rightarrow B_{(g)} + C_{(g)}$. If the initial pressure is $200 \ mm$ and after $20 \ minutes$ it is $250 \ mm$,then the half-life period of the reaction (in minutes) is. $(\log 2 = 0.30, \log 3 = 0.48, \log 4 = 0.60)$

Following data was obtained for the first order decomposition of $SO_2Cl_{2(g)}$ at constant volume:
$SO_2Cl_{2(g)} \to SO_{2(g)} + Cl_{2(g)}$
$S. No.$$Time$ $(s)$$Total$ $pressure$ $(atm)$
$1$$0$$0.5$
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