Question

Formula of Pyro silicic acid
A.\[{H_2}S{i_4}{O_9}\]
B.\[{H_4}S{i_2}{O_6}\]
C.\[{H_4}S{i_3}{O_8}\]
D.\[{H_6}S{i_2}{O_7}\]

Answer 1

Hint:We need to know that the Pyro silicic acid is one of the silica compounds. There is a lot of information about various inorganic components like the boiling point, the weight of the component, it also has about various types of bonds present in one compound. It studies the number of pi and sigma bonds. With the help of this knowledge we can figure out which of the following is Pyro Silicic acid.

Complete step by step answer:
We must know that the hydrated Silica is a form of silicon dioxide, which has chemical formula \[{H_6}S{i_2}{O_7}\].It is the chemical formula of the given compound is \[Si{O_{2n}}{H_2}O\]. With the help of this formula we come to know that option C is the correct option. Inorganic chemistry is a vast sea of so many compounds and their properties.
Pyrosilicic acid has a chemical formula \[{H_6}S{i_2}{O_7}\] that was synthesized, with the help of a non-aqueous solution.
The IUPAC name of Pyrosilicic acid is Trihydroxysilyl trihydrogen orthosilicate
We also remember the other name of Pyrosilicic acid is Disilicic acid.
So option D is correct. This is the correct chemical formula of Pyro silicic acid. Other options don’t have \[Si{O_{2n}}{H_2}O\] so other options are not valid. Option B and C are not valid as number oxygen atoms should be an odd number but here it is even.
And hence option D is the correct answer.

Note:
As we know that there are many exceptions in inorganic chemistry. Many rules are followed and after that only one can get the answer. At the same time there are times where there are exceptions that don’t follow these rules. One should properly count the number of hydrogen bonds and other oxygen bonds present. With the help of this we can correctly say which compound is Pyro Silicic acid. With the help of such information we can know more about inorganic chemistry.