Properties of Haloacids

Q. 13.BiF_5 exist but BiCl_5 doesnt exist why?

Q.

The statement that is true about H₂O molecule is:

1. It has pyramidal geometry and one lone pair of electrons.

2. It has V-shaped geometry and two lone pair of electrons.

3. It has tetrahedral geometry and no lone pair of electrons.

4. It has T-shaped geometry and two lone pair of electrons.

Q. Explain chemical properties of alkyne with their mechanism ?

Q. Bond strength of Hydrogen halides decreases in the order:

1. $H-F>H-I>H-Br>H-Cl$
2. $H-Cl>H-F>H-Br>H-I$
3. $H-F>H-Cl>H-I>H-Br$
4. $H-F>H-Cl>H-Br>H-I$

Q.

The physical property that is not affected by hydrogen bonding is:

1. Surface tension

2. Electronegativity

3. Viscosity

4. Melting and boiling points

Q. Hydrogen bonding can exist only between polar and polar substances and not between non polar and polar or non polar and non polar substances?

Q.

O , F , Cl , N in order of increasing strength of hydrogen bonding ?

Q. Which of the following compounds is insoluble even in hot concentrated H_2SO_4 (1) Ethylene (2) Benzene (3) Hexane (4) Aniline.

Q. The acidity (acid strength) of halo acids increases in the order:

1. $HCl<HF<HBr<HI$
2. $HF<HCl<HBr<HI$
3. $HF<HCl<HI<HBr$
4. $HF<HBr<HCl<HI$

Q. H-F forms hydrogen bonding - True or False?

1. True
2. False

Q.

the species that does not contain peroxide bond is/are

(a) PbO2

(b) H2O2

(c)MnO2

(d)BaO2

Q. The number of atoms of oxygen present in 10.6 g of Na2CO3 is