Oxoacids of Halogens

Q.

The reactions of $C{l}_2$ gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of two different oxoacids of chlorine, P and Q, respectively. The $C{l}_2$ gas reacts with $S{O}_2$ gas, in presence of charcoal, to give a product R reacts with white phosphorus to give a compound S. On hydrolysis, S gives an oxoacid of phosphorus.

3. P and Q, respectively, are the sodium salts of

1. Hypochlorous and chlorous acids

2. Chloric and hypochlorus acids

3. Hypochlorous and chloric acids

4. Chloric and perchloric acids

Q.

Consider a titration of potassium dichromate solution with acidified Mohrs salt solution using diphenylamine as indicator. The number of moles of Mohrs salt required per mole of dichromate is?

1. 3

2. 4

3. 5

4. 6

Q. Bleaching powder and bleach solution are produced on a large scale and used in several household products. The effectiveness of bleach solution is often measured by iodometry.

Bleaching powder contains a salt of an oxoacid as one of its components. The anhydride of that oxoacid is

1. $C{l}_{2}O$
2. $C{l}_2{O}_7$
3. $Cl{O}_2$
4. $C{l}_2{O}_6$

Q. Fluorine forms more than one oxoacid - True or False?

1. True
2. False

Q. Which of the following is not true about $I_4{O}_9$?

1. Iodine exists in both +3 and +5 oxidation states
2. It has a peroxide bond
3. It reacts with water to give iodine and iodic acid
4. It exists as a dark yellow solid

Q. Fluorine forms more than one oxoacid - True or False?

1. True
2. False

Q. The reaction of $C{l}_2$ gas with cold dilute and hot concentrated NaOH in water give sodium salt of two (different) oxoacids of chlorine P and Q respectively. The $C{l}_2$ gas reacts with $S{O}_2$ gas, in presence of charcoal to give a product R. R reacts with white phosphorous to give a compound S. On hydrolysis, S gives as oxoacid of phosphorous T.
P and Q, respectively, are the sodium salts of:

1. Hypochlorus and chloric acid
2. Hypochlorus and chlorus acid
3. Chloric and perchloric acids
4. Chloric and hypochlorus acids.

Q. Which of the following orders is incorrect regarding oxyacids of chlorine and the hydrogen halides?

1. Thermal stability: $HClO<HCl{O}_2<HCl{O}_3<HCl{O}_4$
2. Acidic strength: $HClO<HCl{O}_2<HCl{O}_3<HCl{O}_4$
3. Oxidising power: $HClO<HCl{O}_2<HCl{O}_3<HCl{O}_4$
4. Reducing power: $HF<HCl<HBr<HI$

Q. Consider the following molecule : $C{l}_2{O}_7$. Calculate value of $p\times q$, here $p$ and $q$ are total number of $d\pi -p\pi$ bond and total number of $s{p}^3$ hybridised atoms respectively in given molecule.

Q. $HCl{O}_n$ is oxoacid and oxidising power of $Cl{O}_n^{-}$ decreases with increasing n.

1. True
2. False