Q: The oxidation state of \$S\$ in \$Na_2S_4O_6\$ is:

O.N of \$S\$ is \$X\$O.N of \$Na\$ is \$+1\$O.N of \$O\$ is -2Sum of all O.N is \$2\times +1+(4X)+(6)\times -(2)\$\$4X-10\$ is equal to 0\$X\$ equals to 10/4 which equals to 2.5his compound must have sulfur atoms with mixed oxidation states. Since it is normal for sulfur to have oxidation states of -2, 0, +2, +4, and +6, it is most likely that there are three sulfurs with a +2 oxidation state and one sulfur that is +4.Hence option \$A\$ is correct.

Q: There is no S-S bond in:

There is no S-S bond in \$S_2{O}^{-2}_{7}\$.

Q: Identify the correct sequence of increasing number of \$\pi\$ - bonds in the structures of the following molecules :I) \$H_{2}S_{2}O_{6}\$ II) \$H_{2}SO_{3}\$III) \$H_{2}S_{2}O_{5}\$

\$H_{2}S_{2}O_{6}\$\$\pi - bonds = 4\$\$H_{2}SO_{3}\$\$\pi - bonds = 1\$\$H_{2}S_{2}O_{5}\$\$\pi - bonds = 3\$II < III < I

Q: Which of the following oxoacid of sulphur has \$- O - O -\$ linkage?

\$OH-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-OH\$\$H_2SO_4\$\$OH-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-O-\$\$O-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-OH\$\$H_2S_2O_8\$\$HO-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}\$\$-O-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-OH\$\$H_2S_2O_7\$\$OH-\overset{O}{\overset{||}{S}}-OH\$\$H_2SO_3\$As the structure shown \$H_2S_2O_8\$ contains \$-O-O-\$ linkage.Option B is correct.

Q: Out of \$H_2S_2O_3,\ H_2S_4O_6 ,\ H_2SO_5 \$ and \$ H_2S_2O_8\$ peroxy acids are :

\$H_2SO_5 ,\ H_2S_2O_8\$ have peroxy linkage and thus are peroxy acids.

Q: Which of the following parent oxy acid does not have its hypo acid?

Hypo acid means the main element have lower oxidation state than the present acid.Here, \$HClO,{ HClO }_{ 2 }\$ are Hypo acid \${ HClO }_{ 3 }\$ \${ H }_{ 3 }{ PO }_{ 2 }\$ is hypo acid of \${ H }_{ 3 }{ PO }_{ 3 }\$ \$HNO\$ is hypo acid of \${ HNO }_{ 2 }\$But \${ H }_{ 2 }{ SO }_{ 2 }\$ doesn't have hypo acidAns :- Option A.

Question 1

The oxidation state of $S$ in $Na_2S_4O_6$ is:

Accepted Answer

O.N of $S$ is $X$O.N of $Na$ is $+1$O.N of $O$ is -2Sum of all O.N is $2\times +1+(4X)+(6)\times -(2)$$4X-10$ is equal to 0$X$ equals to 10/4 which equals to 2.5his compound must have sulfur atoms with mixed oxidation states. Since it is normal for sulfur to have oxidation states of -2, 0, +2, +4, and +6,  it is most likely that there are three sulfurs with a +2 oxidation state and one sulfur that is +4.Hence option $A$ is correct.

Question 2

Which of the following are peroxoacids of sulphur?

Accepted Answer

Peroxy linkage means in a compound there should be bond between oxygen and oxygen ($O-O$)In the above oxoacids of sulfur only $H_2SO_5,H_2S_2O_8$ ha spoeroxy linkage.Hence option A is correct.

Question 3

There is no S-S bond in:

Accepted Answer

There is no S-S bond in $S_2{O}^{-2}_{7}$.

Question 4

The oxidation states of $S$ atom in $S_4O_6^{2-}$ from left to right respectively are

Accepted Answer

The two middle sulphur in structure have 0 oxidation state because any atom bonded with similar atoms has an oxidation state of 0.  The total oxidation state of sulphur in the compound is 10. The oxidation state of leftmost and rightmost sulphur is +5, as oxygen is more electronegative.

Question 5

Hydrolysis of one mole of peroxodisulphuric produces :

Accepted Answer

Hydrolysis of one mole of peroxodisulphuric acid produces one mole of sulphuric acid and one mole of peroxomonosulphuric acid.$H_2S_2O_8 + H_2O \longrightarrow H_2SO_4 + H_2SO_5  $Option (C) is correct.

Question 6

Write the name and structure of any five oxyacids of sulphur?

Accepted Answer

Oxyacids of sulphur are as shown in the diagram.(i) Sulphurus acid $H_2SO_3$(ii) Sulphuric acid $H_2SO_4$(iii) Thiosulphuric acid $H_2S_2O_3$(iv) Pyrosulphuric acid $H_2S_2O_7$(v) Peroxymono sulphuric acid $H_2SO_3$

Question 7

Identify the correct sequence of increasing number of $\pi$ - bonds in the structures of the following molecules :I) $H_{2}S_{2}O_{6}$ II) $H_{2}SO_{3}$III) $H_{2}S_{2}O_{5}$

Accepted Answer

$H_{2}S_{2}O_{6}$$\pi - bonds = 4$$H_{2}SO_{3}$$\pi - bonds = 1$$H_{2}S_{2}O_{5}$$\pi - bonds = 3$II  <  III  < I

Question 8

Which of the following oxoacid of sulphur has $- O - O -$ linkage?

Accepted Answer

$OH-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-OH$$H_2SO_4$$OH-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-O-$$O-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-OH$$H_2S_2O_8$$HO-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}$$-O-\overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}}-OH$$H_2S_2O_7$$OH-\overset{O}{\overset{||}{S}}-OH$$H_2SO_3$As the structure shown $H_2S_2O_8$ contains $-O-O-$ linkage.Option B is correct.

Question 9

Out of $H_2S_2O_3,\ H_2S_4O_6 ,\ H_2SO_5 $ and $ H_2S_2O_8$ peroxy acids are :

Accepted Answer

$H_2SO_5 ,\ H_2S_2O_8$  have peroxy linkage and thus are peroxy acids.

Question 10

Which of the following parent oxy acid does not have its hypo acid?

Accepted Answer

Hypo acid means the main element have lower oxidation state than the present acid.Here, $HClO,{ HClO }_{ 2 }$ are Hypo acid ${ HClO }_{ 3 }$          ${ H }_{ 3 }{ PO }_{ 2 }$ is hypo acid of ${ H }_{ 3 }{ PO }_{ 3 }$          $HNO$ is hypo acid of ${ HNO }_{ 2 }$But ${ H }_{ 2 }{ SO }_{ 2 }$ doesn't have hypo acidAns :- Option A.

Revise with Concepts

Oxoacids of Sulphur

Quick Summary With Stories

Oxoacids of Sulphur

The oxidation state of $S$ in $N a_{2} S_{4} O_{6}$ is:

Which of the following are peroxoacids of sulphur?

There is no S-S bond in:

The oxidation states of $S$ atom in $S_{4} O_{6}^{2 -}$ from left to right respectively are

Hydrolysis of one mole of peroxodisulphuric produces :

Write the name and structure of any five oxyacids of sulphur?

Identify the correct sequence of increasing number of $π$ - bonds in the structures of the following molecules :
I) $H_{2} S_{2} O_{6}$
II) $H_{2} S O_{3}$
III) $H_{2} S_{2} O_{5}$

Which of the following oxoacid of sulphur has $- O - O -$ linkage?

Out of $H_{2} S_{2} O_{3}, H_{2} S_{4} O_{6}, H_{2} S O_{5}$ and $H_{2} S_{2} O_{8}$ peroxy acids are :

Which of the following parent oxy acid does not have its hypo acid?

Revise with Concepts

Oxoacids of Sulphur

Quick Summary With Stories

Oxoacids of Sulphur

The oxidation state of S in Na2​S4​O6​ is:

Which of the following are peroxoacids of sulphur?

There is no S-S bond in:

The oxidation states of S atom in S4​O62−​ from left to right respectively are

Hydrolysis of one mole of peroxodisulphuric produces :

Write the name and structure of any five oxyacids of sulphur?

Identify the correct sequence of increasing number of π - bonds in the structures of the following molecules : I) H2​S2​O6​ II) H2​SO3​ III) H2​S2​O5​

Which of the following oxoacid of sulphur has −O−O− linkage?

Out of H2​S2​O3​, H2​S4​O6​, H2​SO5​ and H2​S2​O8​ peroxy acids are :

Which of the following parent oxy acid does not have its hypo acid?

The oxidation state of $S$ in $N a_{2} S_{4} O_{6}$ is:

The oxidation states of $S$ atom in $S_{4} O_{6}^{2 -}$ from left to right respectively are

Identify the correct sequence of increasing number of $π$ - bonds in the structures of the following molecules :
I) $H_{2} S_{2} O_{6}$
II) $H_{2} S O_{3}$
III) $H_{2} S_{2} O_{5}$

Which of the following oxoacid of sulphur has $- O - O -$ linkage?

Out of $H_{2} S_{2} O_{3}, H_{2} S_{4} O_{6}, H_{2} S O_{5}$ and $H_{2} S_{2} O_{8}$ peroxy acids are :