Select the incorrect statment - Vidyadip

MCQ

Select the incorrect statment

A
Rate of exothermic reactions (irreversible) increases with increase in temperature
B
Rate of endothermic reactions (irreversible) increase with increase in temperature
✓
For $N_2 + 3H_2 \rightleftharpoons 2NH_3$ ; If rate of formation of $NH_3$ is $0.001\ Kg\,hr^{-1}$ , then rate of consumption of $H_2$ is $0.0015\ Kg/hr$
D
In Arrhenius equation $K = A{e^{ - Ea/RT}}$ if $T \to \infty \Rightarrow K = A$

✓

Answer

Correct option: C.

For $N_2 + 3H_2 \rightleftharpoons 2NH_3$ ; If rate of formation of $NH_3$ is $0.001\ Kg\,hr^{-1}$ , then rate of consumption of $H_2$ is $0.0015\ Kg/hr$

c
$-\frac{1}{3} \frac{\mathrm{d}\left[\mathrm{H}_{2}\right]}{\mathrm{dt}}=\frac{1}{2} \frac{\mathrm{d}\left[\mathrm{NH}_{3}\right]}{\mathrm{dt}}$

$\therefore \frac{-\mathrm{d}\left[\mathrm{H}_{2}\right]}{\mathrm{dt}}=\frac{3}{2} \times \frac{0.001}{17} \frac{\mathrm{K\,mole}}{\mathrm{hr}}$

$=\frac{3}{2} \times \frac{0.001}{17} \times 2\, \mathrm{Kg} / \mathrm{hr}$

$=1.76 \times 10^{-4} \,\mathrm{Kg} / \mathrm{hr}$

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

Among the following groupings which represents the collection of isoelectronic species?

$DNA$ contains the sugar

The volumes of two $HCl$ solutions $A$ (Normality $= 0.5$) and $B$ (Normality $= 0.1$) to be mixed for preparing $2$ litre of $0.2\, N\, HCl$ are

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) :
Assertion (A) : $S _{ N } 2$ reaction of $C _6 H _5 CH _2 Br$ occurs more readily than the $S _{ N } 2$ reaction of $CH _3 CH _2 Br$.
Reason (R) : The partially bonded unhybridized p-orbital that develops in the trigonal bipyramidal transition state is stabilized by conjugation with the phenyl ring.
In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following oil is obtained from benzene after fractional distillation of coal tar

The product $(A)$ formed in the following reaction

Assertion : The rate of the reaction is the rate of change of concentration of a reactant or a product.

Reason : Rate of reaction remains constant during the course of reaction.

$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{Br}+\mathrm{NaOH} \xrightarrow{\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}}$ Product '$A$'

Consider the above reactions, identify product $B$ and product $\mathrm{C}$

On dissolving $1\,mole$ of each of the following acids in $1\,litre$ water, the acid which does not give a solution of strength $1\,N$ is

Given ${E^o}_{A{g^ + }/Ag} = 0.80\,V,\,\,\,{E^o}_{M{g^{2 + }}/Mg} = - 2.37\,V,$ ${E^o}_{C{u^{2 + }}/Cu} = 0.34\,V,\,\,{E^o}_{H{g^{2 + }}/Hg}\, = 0.79\,V.$

Which of the following statements is correct ?