Rate of reaction at \(10\, \mathrm{s}=-0.04 \,\mathrm{mol} \,\mathrm{L}^{-1} \,\mathrm{s}^{-1}\)
Rate of reaction at \(20\, \mathrm{s}=\mathrm{s}=0.03\, \mathrm{mol} \,\mathrm{L}^{-1} \mathrm{s}^{-1}\)
\(\therefore\) Half - life period \(\left(\mathrm{t}_{1 / 2}\right)=?\)
We have the equation for rate \(-\) constant \(k\) in first order reaction
\(\mathrm{k}=\frac{2.303}{\mathrm{t}} \log \frac{\mathrm{A}_{\mathrm{t}}}{\mathrm{A}_{0}}\)
\(=\frac{2.303}{105} \log \frac{0.04}{0.03}\)
\(=\frac{2.303}{105} \times 0.124\)
\(\mathrm{k}=0.028\, \mathrm{s}^{-1}\)
We know that, \(t_{1 / 2}=\frac{0.693}{k}\)
\(=\frac{0.693}{0.028773391}=24.14\, \mathrm{s}=24.1\, \mathrm{s}\)
| પ્રયોગ | $\frac{[ X ]}{ mol \;L ^{-1}}$ | $\frac{[ Y ]}{ mol\; L ^{-1}}$ | $\frac{\text { Initial rate }}{ mol\; L ^{-1}\; min ^{-1}}$ |
| $I$ | $0.1$ | $0.1$ | $2 \times 10^{-3}$ |
| $II$ | $.2$ | $0.2$ | $4 \times 10^{-3}$ |
| $III$ | $0.4$ | $0.4$ | $M \times 10^{-3}$ |
| $IV$ | $0.1$ | $0.2$ | $2 \times 10^{-3}$ |
$M$ મૂલ્યનો સંખ્યાત્મક ગુણોત્તર $........$ છે. (નજીકનો પૂર્ણાંક)
|
ક્રમ. |
$[A]_0$ |
$[B]_0$ |
શરૂઆતનો વેગ |
|
$(1)$ |
$0.012$ |
$0.035$ |
$0.10$ |
|
$(2)$ |
$0.024$ |
$0.070$ |
$0.80$ |
|
$(3)$ |
$0.024$ |
$0.035$ |
$0.10$ |
|
$(4)$ |
$0.012$ |
$0.070$ |
$0.80$ |
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