Which of the following is most soluble in water?
1. MnS (Ksp = 8x10-37)
2. ZnS (Ksp = 7x10-16)
3. Bi2S3 (Ksp = 1x10-70)
4. Ag2S (Ksp = 6x10-51)
The compound that does not act as Lewis acid is:
1. AlCl3
2. BF3
3. NH3
4. FeCl3
The hydrolysis of the salt of a strong acid and a weak base is called:
1. Anionic hydrolysis
2. Cationic hydrolysis
3. Amphoteric hydrolysis
4. None of the above
For a sparingly soluble salt ApBq, the relationship of its solubility product (Ls) with its solubility (s) is:
1. Ls =sp+q.pp.qq
2. Ls =sp+q.pq.qp
3. Ls =spq.pp.qq
4. Ls = spq.(pq)p+q
For the reaction, A+B \(⇌ \)3C at \(25^{\circ}C\), a 3 litre vessel contains 1, 2, and 4 mole of A, B and C respectively. If Kc for the reaction is 10, then the reaction will proceed in:
1. forward direction
2. backward direction
3. in either direction
4. in equilibrium
The pH of 0.1M soution of the folowing salts increases in the order:
1. NaCl < NH4Cl < NaCN < HCl
2. HCl < NH4Cl < NaCl < NaCN
3. NaCN < NH4Cl < NaCl < HCl
4. HCl < NaCl < NaCN < NH4Cl
Three reactions involving are given below:
(i) H3PO4 + H2O H3O+ +
(ii) + H2O + H3O+
(iii) + OH- H3PO4 +O2-
In which of the above does act as an acid?
1. (i) only
2. (ii) only
3. (i) and (ii)
4. (iii) only
For the reaction, N2 + 3H2 2NH3 in a vessel, after the addition of an equal number of mole of N2 and H2, the equilibrium state is formed. Which of the following is correct?
1. [H2] = [N2]
2. [H2] < [N2]
3. [H2] > [N2]
4. [H2] > [NH3]
For which salt the pH of its solution does not change with dilution?
1. NH4Cl
2. CH3COONH4
3. CH3COONa
4. None of these
The conjugate base of [Al(H2O)3(OH)3] is:
1. [Al(H2O)3(OH)2]+
2. [Al(H2O)3(OH)2O]-
3. [Al(H2O)3(OH)3]-
4. [Al(H2O)2(OH)4]-