MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Percentage Composition

For the decom...

Question

For the decomposition of $H I$ at $1000$ $K$ $(2 H I ⟶ H_{2} + I_{2})$ , the following data were obtained:
$[H I] (M)$ Rate of decomposition of $H I (m o l L^{- 1} s^{- 1})$
$0.1$ $2.75 \times 10^{- 8}$
$0.2$ $11 \times 10^{- 8}$
$0.3$ $24.75 \times 10^{- 8}$
The order of reaction is:

A

1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

2

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

0

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

1.5

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $2$
Rate $= k {[H I]}^{n}$
$11 \times 10^{- 8} = k {[0.2]}^{n}$ ...(i)
$2.75 \times 10^{- 8} = k {[0.1]}^{n}$ ....(ii)
Dividing equation (i) by equation (ii),
$4 = 2^{n}, n = 2$

Suggest Corrections

thumbs-up

1

Similar questions

Q. For the decomposition of

A B

600

K

, the following data were obtained:

$[A B] m o l {d m}^{- 3}$	Initial rate of decomposition of $A B$ in $m o l {d m}^{- 3} s^{- 1}$
$0.20$	$2.75 \times 10^{- 8}$
$0.40$	$11 \times 10^{- 8}$
$0.60$	$24.75 \times 10^{- 8}$

The order of the decomposition of

A B

Q. The rate of the reaction

H_{2} + I_{2} ⇌ 2 H I

r a t e = 1.7 \times 10^{- 19} [H_{2}] [I_{2}]

25^{\circ} C

The rate of decomposition of gaseous

H I

H_{2}

I_{2}

r a t e = 2.4 \times 10^{- 21} [H I]^{2}

25^{\circ} C

.
Calculate the equilibrium constant for the formation of

H I

H_{2}

I_{2}

25^{\circ} C

Q. An organic compound undergoes first-order decomposition. The time taken for its decomposition to 1/8 and 1/10 of its initial concentration are

t_{1 / 8}

t_{1 / 10}

respectively. What is the value of

\frac{t_{1 / 8}}{t_{1 / 10}} \times 10

1 o g_{10} 2 = 0.3

)

Q. The rate of the elementary reaction

H_{2} (g) + I_{2} (g) ⇌ 2 H I (g)

25^{\circ} C

is given by:
Rate =

1.7 \times 10^{- 18} [H_{2}] [I_{2}]

. The rate of decomposition of gaseous

H I

H_{2} (g)

I_{2} (g)

at 25C is rate =

2.4 \times 10^{- 21} {[H I]}^{2}

. Equilibrium constant for

{1 / 2 H}_{2} (g) + 1 / 2 I_{2} (g) ⇌ H I (g)

Q. An organic compound undergoes decomposition via first order kinetics. The time taken for its decomposition to

\frac{1}{8}

\frac{1}{10}

th of its initial concentration are

\frac{t_{1}}{8}

\frac{t_{1}}{10}

respectively. What is the value of

\frac{[\frac{t_{1}}{8}]}{[\frac{t_{1}}{10}]} \times 10 ? ({log}_{10} 2 = 0.3)

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Percentage Composition and Molecular Formula

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Percentage Composition

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon