Answer
417.9k+ views
Hint: Law of mass action says that the rate of a chemical reaction is directly proportional to the concentration of the substances involved in the chemical reaction. Law of mass action can be applicable to the reaction where chemical equilibrium exists.
Complete answer:
- In the question it is given that the law of mass action cannot be applied to which option among the given options.
- Coming to the given options. Option A, Decomposition of gaseous HI. It is a chemical reaction in which HI is going to dissociate into hydrogen and iodine and the products are in chemical equilibrium with the reactants.
- The dissociation of HI is as follows.
\[2HI\rightleftarrows {{H}_{2}}+{{I}_{2}}\]
- The option A is an example where chemical equilibrium exists.
- Coming to option B, Decomposition of gaseous $PC{{l}_{5}}$ .
- It is a chemical reaction in which $PC{{l}_{5}}$ is going to dissociate in to $PC{{l}_{3}}$ and $C{{l}_{2}}$ , these products are in chemical equilibrium with the reactants.
- The dissociation of $PC{{l}_{5}}$ is as follows.
\[PC{{l}_{5}}\rightleftarrows PC{{l}_{3}}+C{{l}_{2}}\]
- The option B is an example where chemical equilibrium exists.
- Coming to option C, Transition of Rhombic Sulphur to monoclinic sulphur. We know that it is a physical equilibrium means change in physical property occurs.
- Therefore on option C Law of mass action cannot be applied.
- Coming to option D, Decomposition of Calcium carbonate.
- The chemical reaction of decomposition of Calcium carbonate is as follows.
\[CaC{{O}_{3}}\rightleftarrows CaO+C{{O}_{2}}\]
- The option D is an example where chemical equilibrium exists.
- Therefore, Transition of Rhombic Sulphur to monoclinic sulphur is a physical equilibrium not a chemical equilibrium so law mass action cannot be applied.
So, the correct option is C.
Note: Physical equilibrium won’t come under the law of mass action. Law of mass action is applicable where chemical equilibrium exists. For physical changes, the law of mass action cannot be applied in any case.
Complete answer:
- In the question it is given that the law of mass action cannot be applied to which option among the given options.
- Coming to the given options. Option A, Decomposition of gaseous HI. It is a chemical reaction in which HI is going to dissociate into hydrogen and iodine and the products are in chemical equilibrium with the reactants.
- The dissociation of HI is as follows.
\[2HI\rightleftarrows {{H}_{2}}+{{I}_{2}}\]
- The option A is an example where chemical equilibrium exists.
- Coming to option B, Decomposition of gaseous $PC{{l}_{5}}$ .
- It is a chemical reaction in which $PC{{l}_{5}}$ is going to dissociate in to $PC{{l}_{3}}$ and $C{{l}_{2}}$ , these products are in chemical equilibrium with the reactants.
- The dissociation of $PC{{l}_{5}}$ is as follows.
\[PC{{l}_{5}}\rightleftarrows PC{{l}_{3}}+C{{l}_{2}}\]
- The option B is an example where chemical equilibrium exists.
- Coming to option C, Transition of Rhombic Sulphur to monoclinic sulphur. We know that it is a physical equilibrium means change in physical property occurs.
- Therefore on option C Law of mass action cannot be applied.
- Coming to option D, Decomposition of Calcium carbonate.
- The chemical reaction of decomposition of Calcium carbonate is as follows.
\[CaC{{O}_{3}}\rightleftarrows CaO+C{{O}_{2}}\]
- The option D is an example where chemical equilibrium exists.
- Therefore, Transition of Rhombic Sulphur to monoclinic sulphur is a physical equilibrium not a chemical equilibrium so law mass action cannot be applied.
So, the correct option is C.
Note: Physical equilibrium won’t come under the law of mass action. Law of mass action is applicable where chemical equilibrium exists. For physical changes, the law of mass action cannot be applied in any case.
Recently Updated Pages
Mark and label the given geoinformation on the outline class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
When people say No pun intended what does that mea class 8 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Name the states which share their boundary with Indias class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give an account of the Northern Plains of India class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Advantages and disadvantages of science
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Bimbisara was the founder of dynasty A Nanda B Haryanka class 6 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
10 examples of evaporation in daily life with explanations
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
How do you graph the function fx 4x class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)