Advertisements
Advertisements
प्रश्न
The slope in the plot of `log ["R"]_0/(["R"])` Vs. time for a first-order reaction is ______.
पर्याय
`(+"k")/2.303`
+k
`(-"k")/2.303`
−k
Advertisements
उत्तर
The slope in the plot of `log ["R"]_0/(["R"])` Vs. time for a first-order reaction is `bbunderline((+"k")/2.303)`.
Explanation:
For the reaction, \[\ce{R -> Products}\]
The integrated first-order rate equation is
log [R] = `(−"kt")/2.303 + log ["R"_0]`
or `log (["R"_0])/(["R"]) = ("kt")/2.303`
Comparing the above equation with a straight-line equation y = mx + c
∴ y = `log (["R"_0])/(["R"])`, x = t, slope = `"k"/2.303`
APPEARS IN
संबंधित प्रश्न
Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law with `t_(1/2)` = 3 hours. What fraction of the sample of sucrose remains after 8 hours?
A first order reaction has a rate constant 1.15 × 10−3 s−1. How long will 5 g of this reactant take to reduce to 3 g?
The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume.
\[\ce{SO2Cl2_{(g)} -> SO2_{(g)} + Cl2_{(g)}}\]
| Experiment | Time/s–1 | Total pressure/atm |
| 1 | 0 | 0.5 |
| 2 | 100 | 0.6 |
Calculate the rate of the reaction when total pressure is 0.65 atm.
A first order reaction is 50% complete in 25 minutes. Calculate the time for 80% completion of the reaction.
First order reaction is 50% complete in 1.26 × 1014s. How much time could it take for 100% completion?
A first order reaction is 50% complete in 20 minute What is rate constant?
Radioactive decay follows first-order kinetics. The initial amount of two radioactive elements X and Y is 1 gm each. What will be the ratio of X and Y after two days if their half-lives are 12 hours and 16 hours respectively?
Define first-order reaction.
The rate constant for the reaction:
\[\ce{2N2O_{(s)} ->2N2O4_{(g)}}\] is 4.98 × 10-4 s-1.
The order of the reaction is ______.
Write the unit of rate constant [k] for the first order reaction.
