Oxoacids of Halogens

Q. Acidity of oxoacids decreases in the order

Q. Which of the following is the strongest base?

1. $Cl{O}_2^{-}$
2. $Cl{O}_3^{-}$
3. $Cl{O}^{-}$
4. $Cl{O}_4^{-}$

Q. Paragraph 2
The reactions of $C{l}_2$ gas with cold-dilute and hot-concentrated NaOH in water give soduum salts fo 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.

4. R, S and T, respectively, are
(IIT-JEE, 2013)

1. $SOC{l}_2,PC{l}_{3}and{H}_{3}P{O}_2$
2. $S{O}_{2}C{l}_2,PC{l}_{3}and{H}_{3}P{O}_3$
3. $SOC{l}_2,PC{l}_{5}and{H}_{3}P{O}_4$
4. $S{O}_{2}C{l}_2,PC{l}_{5}and{H}_{3}P{O}_4$

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. Chloric and hypochlorus acids

2. Hypochlorous and chloric acids

3. Hypochlorous and chlorous acids

4. Chloric and perchloric acids

Q. The products obtained when chlorine gas reacts with cold and dilute aqueous NaOH are:-

1. $Cl{O}_2^{-}$ and $Cl{O}_3^{-}$
2. $C{l}^{-}$ and $Cl{O}_3^{-}$
3. $Cl{O}^{-}$ and $Cl{O}_3^{-}$
4. $C{l}^{-}$ and $Cl{O}^{-}$

Q. Among the following oxoacids, the correct decreasing order of acid strength is
(IIT-JEE Advanced, 2014)

1. $HOCl>HCl{O}_2>HCl{O}_3>HCl{O}_4$
2. $HCl{O}_4>HCl{O}_3>HCl{O}_2>HOCl$
3. $HCl{O}_2>HCl{O}_4>HCl{O}_3>HOCl$
4. $HCl{O}_4>HOCl>HCl{O}_2>HCl{O}_3$

Q.

Among the following, the correct order of acidity is

1. $HCl{O}_2<HClO<HCl{O}_3<HCl{O}_4$

2. $HCl{O}_3<HCl{O}_4<HCl{O}_2<HClO$

3. $HClO<HCl{O}_2<HCl{O}_3<HCl{O}_4$

4. $HCl{O}_4<HCl{O}_2<HClO<HCl{O}_3$

Q. The correct statement(s) about the oxoacids, $HCl{O}_4$ and $HClO$ , is (are)

1. The central atom in both $HCl{O}_4$ and $HClO$ is $s{p}^3$ hybridized
2. $HCl{O}_4$ is formed in the reaction between $C{l}_2$ and $H_{2}O$
3. The conjugate base of $HCl{O}_4$ is weaker base than $H_{2}O$
4. $HCl{O}_4$ is more acidic than $HClO$ because of the resonance stabilization of its anion $HCl{O}_4$ $HClO$

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. Of the four oxyacids of chlorine, the strongest oxidizing agent in dilute aqueous solution is

1. 
2. 
3. 
4.