The reaction A(g) + 2B(g) C(g) + D(g) is an elementary process. I… - Vidyadip

MCQ

The reaction $A(g) + 2B(g) \longrightarrow C(g) + D(g)$ is an elementary process. In an experiment, the initial partial pressure of $A$ and $B$ are $0.6$ and $0.8\, atm$, respectively. When partial pressure of $C$ is $0.2\, atm$, the rate of reaction relative to the initial rate is

A
$1/48$
B
$1/24$
C
$9/16$
✓
$1/6$

✓

Answer

Correct option: D.

$1/6$

d
The expression for the initial rate is $\mathrm{r}_{0}=\mathrm{K}[\mathrm{A}][\mathrm{B}]^{2}=\mathrm{K}(0.60)(0.80)^{2} \ldots \ldots$ (1)

After some time, the pressure of $\mathrm{C}$ is $0.20 \mathrm{atm}$. Hence, the pressures of $A$ and $B$ are $0.60-0.20=0.40$ atm and $0.80-2(0.20)=0.40$ atm

respectively. The expression for the rate becomes $\mathrm{r}=\mathrm{k}[\mathrm{A}][\mathrm{B}]^{2}=\mathrm{K}(0.40)(0.40)^{2} \ldots . .$ ( $\left.2\right)$

Divide equation (2) with equation (1) $\frac{r_{o}}{r_{1}}=\frac{k[A][B]^{2}=K(0.60)(0.80)^{2}}{k[A][B]^{2}=K(0.40)(0.40)^{2}}=\frac{1}{6}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following nonaromatic in nature

The value of $\Delta H$ for the reaction $X_{2(g)} + 4Y_{2(g)} \rightleftharpoons XY_{4(g)}$ is less than zero. Formation of $XY_{4(g)}$ will be favoured at

Predict the major product of the following reaction sequence.

The following solutions were prepared by dissolving $10\, \mathrm{~g}$ of glucose $\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)$ in $250 \,\mathrm{ml}$ of water $\left(\mathrm{P}_{1}\right)$, $10\, \mathrm{~g}$ of urea $\left(\mathrm{CH}_{4} \mathrm{~N}_{2} \mathrm{O}\right)$ in $250\, \mathrm{ml}$ of water $\left(\mathrm{P}_{2}\right)$ and $10\, \mathrm{~g}$ of sucrose $\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)$ in $250\, \mathrm{ml}$ of water $\left(\mathrm{P}_{3}\right)$. The right option for the decreasing order of osmotic pressure of these solutions is :

A transition metal ' $\mathrm{M}$ ' among $\mathrm{Sc}, \mathrm{Ti}, \mathrm{V}, \mathrm{Cr}, \mathrm{Mn}$ and $\mathrm{Fe}$ has the highest second ionisation enthalpy. The spin only magnetic moment value of $\mathrm{M}^{+}$ion is. . . . . . .$\mathrm{BM}$ (Near integer)

(Given atomic number $\mathrm{Sc}: 21, \mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}$ : $24, \mathrm{Mn}: 25, \mathrm{Fe}: 26)$

What is the major organic product of the following sequence of reactions ?

Butene$-1$ may be converted to butane by reaction with

The product obtained from the reaction is

The number of species from the following carrying a single lone pair on central atom Xenon is $.....$: $XeF _5^{+}, XeO _3, XeO _2 F _2, XeF _5^{-}, XeO _3 F _2, XeOF _4$, $XeF _4$

The reaction ${C_6}{H_5}CHO + C{H_3}CHO \to {C_6}{H_5}CH = CH - CHO$ is known as