Answer
424.5k+ views
Hint: Oxyacid is a compound that contains oxygen, hydrogen and one other element. Here, we are provided with oxoacids of sulphur, these contain oxygen, hydrogen and sulphur atoms.
Complete step by step answer:
- Oleum is also called as pyrosulfuric acid. The molecular formula of oleum is ${{H}_{2}}{{S}_{2}}{{O}_{7}}$. We can see the structure of oleum:
- We can see from the structure that there is no S-S single bond present, hence this option is wrong.
- Next option is Marshall’s acid, we also called it as peroxydisulfuric acid, its molecular formula is ${{H}_{2}}{{S}_{2}}{{O}_{8}}$ . We will see the structure of this:
- Here, we can see that there is one peroxy linkage that O-O is present, and there is no S-S single bond present. Hence, this option is wrong.
- Let’s see the next option Dithionic acid, its molecular formula is ${{H}_{2}}{{S}_{2}}{{O}_{6}}$. We will see the structure of this:
- We can see from the structure that there is one S-S single bond present. And we can say that this option is correct.
- Similarly, in Thiosulphuric acid, there is no S-S single bond present. We can see this from structure:
Hence, we can conclude that the correct option is (C), Dithionic acid contains S-S single bond.
Note: We know that an oxyacid molecule contains the structure X-O-H, where O is oxygen, H is hydrogen and X is any element. Where, other atoms can be connected to the central metal atom X. In a solution, oxyacid can be dissociated as: $X-O-H\rightleftarrows {{\left( X-O \right)}^{-}}+H$
Complete step by step answer:
- Oleum is also called as pyrosulfuric acid. The molecular formula of oleum is ${{H}_{2}}{{S}_{2}}{{O}_{7}}$. We can see the structure of oleum:
![seo images](https://www.vedantu.com/question-sets/f4164a70-7b08-4ffe-984c-c0874119aceb6306961679761206222.png)
- We can see from the structure that there is no S-S single bond present, hence this option is wrong.
- Next option is Marshall’s acid, we also called it as peroxydisulfuric acid, its molecular formula is ${{H}_{2}}{{S}_{2}}{{O}_{8}}$ . We will see the structure of this:
![seo images](https://www.vedantu.com/question-sets/ba406608-0d8a-4707-a0e3-a7bc0c5dc3894508750166528876076.png)
- Here, we can see that there is one peroxy linkage that O-O is present, and there is no S-S single bond present. Hence, this option is wrong.
- Let’s see the next option Dithionic acid, its molecular formula is ${{H}_{2}}{{S}_{2}}{{O}_{6}}$. We will see the structure of this:
![seo images](https://www.vedantu.com/question-sets/11998848-1b1b-4e6c-9cf9-610de60076a13037183430892065560.png)
- We can see from the structure that there is one S-S single bond present. And we can say that this option is correct.
- Similarly, in Thiosulphuric acid, there is no S-S single bond present. We can see this from structure:
![seo images](https://www.vedantu.com/question-sets/4923c4c1-a78f-47c4-9b9b-4cd9b7a2e53a1801114431915331435.png)
Hence, we can conclude that the correct option is (C), Dithionic acid contains S-S single bond.
Note: We know that an oxyacid molecule contains the structure X-O-H, where O is oxygen, H is hydrogen and X is any element. Where, other atoms can be connected to the central metal atom X. In a solution, oxyacid can be dissociated as: $X-O-H\rightleftarrows {{\left( X-O \right)}^{-}}+H$
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