Which of the following molecules acts as a Lewis acid ?
(CH3)3B
(CH3)2O
(CH3)3P
(CH3)3N
In which of the following the solubility of AgCl will be minimum ?
0.1 m NaNO3
Water
0.1 m NaCl
0.1 m NaBr
The concentration of [H+] and concentration of [OH- ] of a 0.1M aqueous solution of 2% ionised weak monobasic acid is [ionic product of water = 1×10-14 ]
0.02×10-3 M and 5×10-11 M
1×10-3 M and 3×10-11 M
2×10-3 M and 5×10-12 M
3×10-2 M and 4×10-13 M
The solubility product of AgI at 250C is 1.0 ×10-16 mol2L-2.The solubility of AgI in 10-4 N solution of KI at 250C is approximately (in mol L-1)
1.0 ×10-10
1.0 ×10-8
1.0 ×10-16
1.0 ×10-12
The dissociation equilibrium of a gas AB2 can be represented as : 2AB2(g) 2AB(g) +B2(g) The degree of dissociation is 'x' and is small compared to 1.The expression relating the degree of dissociation (x) with equilibrium constant Kp and total pressure p is _______ .
(2Kp/ p)
(2Kp / p)1/3
(2Kp / p)1/2
(Kp / p)
Solubility of MX2 type electrolytes is 0.5 ×10-4 mol / L, then find out Ksp of electrolytes.
5×10-12
25×10-10
1×10-13
5×10-13
Solution of 0.1 N NH4OH and 0.1 N NH4Cl has pH 9.25, then find out pKb of NH4OH
9.25
4.75
3.75
8.25
Which of the following pairs constitutes a buffer ?
HNO2 and NaNO2
NaOH and NaCl
HNO3 and NH4NO3
HCl and KCl
The pH value of a 10 m solution of HCl is _________ .
less than 0
Equal to 0
Equal to 1
Equal to 2
The conjugate acid of NH2- is ______ .
N2H4
NH4 +
NH2 OH
NH3
