MHT CET 2021 22th September Evening Shift | Chemical Kinetics Question 40 | Chemistry

Which of the following statements is NOT true for a reaction having rate law $$\mathrm{r}=\mathrm{k}\left[\mathrm{H}_2\right]\left[\mathrm{I}_2\right]$$ ?

The reaction is first order in $$\mathrm{H}_2$$

Overall order of reaction is 1

The reaction is first order in $$\mathrm{I}_2$$

Overall order of reaction is 2

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

For the reaction $$\mathrm{N}_{2(\mathrm{~g})}+3 \mathrm{H}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{NH}_{3(\mathrm{~g})}$$, what is the relation between $$\frac{\mathrm{d}\left[\mathrm{N}_2\right]}{\mathrm{dt}}$$ and $$\frac{\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}$$ ?

$$3 \frac{\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}=\frac{\mathrm{d}\left[\mathrm{N}_2\right]}{\mathrm{dt}}$$

$$\frac{\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}=3 \frac{\mathrm{d}\left[\mathrm{N}_2\right]}{\mathrm{dt}}$$

$$3 \frac{\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}=2 \frac{\mathrm{d}\left[\mathrm{N}_2\right]}{\mathrm{dt}}$$

$$\frac{\mathrm{d}\left[\mathrm{H}_2\right]}{\mathrm{dt}}=\frac{\mathrm{d}\left[\mathrm{N}_2\right]}{\mathrm{dt}}$$

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

For a first order reaction, intercept of the graph between $$\mathrm{\log\frac{[A]_o}{[A]_t}}$$(Y-axis) and conc. (X-axis) is equal to

$$\mathrm{-\frac{k}{2.303~K}}$$

$$\mathrm{-\log[A]_o}$$

zero

$$\mathrm{\frac{2.303}{K}}$$

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

What is the half-life of a first order reaction if time required to decrease concentration of reactant from 1.0 M to 0.25 M is 10 hour?

12 hour

4 hour

5 hour

10 hour

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