Chemistry - CHEMICAL BONDING Question with Solution | TestHub
Acids that contain hydrogen attached to oxygen along with another element (often a non metal) are termed as oxyacids. The basicity of oxyacids is determined by how many hydrogens are attached to oxygen atoms. They also show hydrogen bonding. Consider the following oxyacids.
(a) Pyrosulphurous acid
(b) Tetra polyphosphoric acid
(c) Peroxydisulphuric acid
(d) Isohypophosphoric acid
(e) Selenic acid
(f) Telluric acid
(g) Pyrosilicic acid
Number of acids in which each atom of the following elements ( S or P or Se or Te ) is in its highest oxidation state.
Answer:
Solution:
To find the number of acids where the central atoms are in their highest oxidation state, we compare the calculated states to the group maximums: S (+6), P (+5), Se (+6), Te (+6), and Si (+4).
Excluded: Pyrosulfurous acid (a) has S in +3 and +5 states, while isohypophosphoric acid (d) has P in +3 and +5 states; neither consists solely of atoms in the highest state.
Included (P & S): Tetrapolyphosphoric acid (b) has all P atoms in the +5 state, and peroxydisulfuric acid (c) has both S atoms in the +6 state.
Included (Se & Te): Selenic acid (e) and telluric acid (f) both contain their central atoms in the highest +6 oxidation state.
Included (Si): Pyrosilicic acid (g) features Si in its highest +4 oxidation state.
Final Count: There are 5 such acids (b, c, e, f, and g).