Oxoacids of Halogens

Q. which is a lewis acid 1.B2H6 2.LiAlH4 3.AlH3 4.NH3

Q.

Among the following, the correct order of acidity is

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

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

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

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

Q. 44. Which of the following does not act as lewis acid? (1)BF3 (2)SnCl4 (3)CCl4 (4)SF4

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 chloric acids

2. Hypochlorous and chlorous acids

3. Chloric and perchloric acids

4. Chloric and hypochlorus acids

Q. Lewis acid character b2h6, bf3, bbr3, bi3

Q. Why are potassium and caesium, rather than lithium used in photoelectric cells?

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. Reaction When haloalkene react with NaNH2/NH3(l) .

Q.

Which of the following oxyacids of Chlorine is the strongest oxidizing agent?

1. Perchloric acid

2. Hypochlorous acid

3. Chlorous acid

4. Chloric acid

Q. Which is the strongest acid in the following?

1. $HCl{O}_4$
2. $H_{2}S{O}_3$
3. $H_{2}S{O}_4$
4. $HCl{O}_3$

Q. what is halogenation and sulphonation?

Q. 18. Ionisation of which of the following will be maximum in water --. 1) Picric acid (2) Formic acid (3) Acetic acid 4) Benzoic acid.

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

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

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

Q.

HNO₃ acid acts only as oxidising agent but HNO₂acid acts like both oxidising agent and reducing agent? why?

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

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

Q.

why are peroxides and superoxides stable in comparison to other oxides

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

1. True
2. False

Q. The correct statement(s) regarding, (i) $HClO$, (ii) $HCl{O}_2$, (iii) $HCl{O}_3$ and (iv) $HCl{O}_4$ is(are):

1. The number of $Cl=O$ bonds in (ii) and (iii) together is two
2. The number of lone pairs of electrons on $Cl$ in (ii) and (iii) together is three
3. The hybridization of $Cl$ in (iv) is $s{p}^3$
4. Amongst (i) to (iv), the strongest acid is (i)

Q. Which of the following is the weakest acid ? (1) HCl (2) HI (3) HF (4) HB

Q. what is halogenation and sulphonation?

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.