Dissolution of Solids and Gases in Liquid

Q.

$p{K}_a$ values of two acids A and B are 4 and 5. The strengths of these two

acids are related as

1. Acid A is 10 times stronger than acids B

2. The strengths of the two acids can not be compared

3. Strength of acid A : strengtha of acid B = 4 : 5

4. Acid B is 10 times stronger than acid A

Q. What is the concentration of H+ ions in 2M H2SO4 solution?

Q. (SiF6)2- is known whereas (SiCl6)2- is not why??

Q. exchange in matter but not energy is possible in thermodynamics system ?

Q. A liquid is in equilibrium with its vapour at its boiling point. On average, the molecules in the two phases have equal:

1. Intermolecular forces
2. Potential energy
3. Kinetic energy
4. Kinetic and potential energy

Q. Percentage of ionization of different acid/base will vary in water, like-H2SO4>H2SO3 or HI>HCl. So there will be different concentration of H3O+ /OH- for different acid/base. Then why according to Levelling effect of water all the acids/ base will have same strength in water?

Q. How to determine whether a salt will precipitate or not among some given salts by seeing their Ksp values ?

Q. One litre of water contains ${10}^{-7}$ moles of $H^{+}$ ions. Degree of ionisation of water (in percentage) is:

1. $1.8\times {10}^{-9}$
2. $1.8\times {10}^{-7}$
3. $3.6\times {10}^{-7}$
4. $3.6\times {10}^{-9}$

Q. How does hydroxyl ion concentration decrease on addition of acid to water

Q. What difference between hydrolysis and dissociation