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: The number of \$S=O\$ and \$S-OH\$ bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:

The number of S=O and S−OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are (4 and 2) and (4 and 2).

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: 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

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

There is no S-S bond in:

Accepted Answer

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

Question 3

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 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

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 6

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 7

The number of $S=O$ and $S-OH$ bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:

Accepted Answer

The number of S=O and S&#8722;OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are (4 and 2) and (4 and 2).

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

The total number of compounds having at least one bridging oxo group among the molecules given below is:

$N_{2} O_{3}, N_{2} O_{5}, P_{4} O_{6}, P_{4} O_{7}, H_{4} P_{2} O_{5}, H_{5} P_{3} O_{10}, H_{2} S_{2} O_{3}, H_{2} S_{2} O_{5}$ .

Accepted Answer

Hence, answer is 6.

Question 10

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

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Oxoacids of Sulphur

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Oxoacids of Sulphur

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

There is no S-S bond in:

Which of the following are peroxoacids of sulphur?

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

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

Hydrolysis of one mole of peroxodisulphuric produces :

The number of $S = O$ and $S - O H$ bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:

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

The total number of compounds having at least one bridging oxo group among the molecules given below is:

$N_{2} O_{3}, N_{2} O_{5}, P_{4} O_{6}, P_{4} O_{7}, H_{4} P_{2} O_{5}, H_{5} P_{3} O_{10}, H_{2} S_{2} O_{3}, H_{2} S_{2} O_{5}$ .

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) $H_{2} S_{2} O_{5}$

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Oxoacids of Sulphur

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Oxoacids of Sulphur

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

There is no S-S bond in:

Which of the following are peroxoacids of sulphur?

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

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

Hydrolysis of one mole of peroxodisulphuric produces :

The number of S=O and S−OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:

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

The total number of compounds having at least one bridging oxo group among the molecules given below is: N2​O3​,N2​O5​,P4​O6​,P4​O7​,H4​P2​O5​,H5​P3​O10​,H2​S2​O3​,H2​S2​O5​.

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​

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

The number of $S = O$ and $S - O H$ bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:

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

The total number of compounds having at least one bridging oxo group among the molecules given below is:

$N_{2} O_{3}, N_{2} O_{5}, P_{4} O_{6}, P_{4} O_{7}, H_{4} P_{2} O_{5}, H_{5} P_{3} O_{10}, H_{2} S_{2} O_{3}, H_{2} S_{2} O_{5}$ .

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) $H_{2} S_{2} O_{5}$