0.1 M solution of which one of these substances will be basic ?
Sodium borate
Calcium nitrate
NH4Cl
Sodium sulphate
The solubility product of a sparingly soluble salt AX2 is 3.2 ×10-11. Its solubility ( in mol / L ) is
5.6 ×10-6
3.1 ×10-4
2 ×10-4
4 ×10-4
The hydride ion H- is strong base than its hydroxide ion OH-. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in Water ?
2H-(aq) + H2O(l)→H2O+H2 +2e-
H-(aq) + H2O(l)→OH-+H2
H - + H2O(l) → no reaction
None of the above
Which of the following is most soluble ?
Bi2S3(KSP=1×10-70)
MnS(KSP=7×10-16)
CuS(KSP=8×10-37)
Ag2S(KSP=6×10-51)
The solubility of a saturated solution of calcium fluoride is 2×10-4 mol / L . Its solubility product is,
12×10-2
14×10-4
22×10-11
32×10-12
H2S gas when passed through a solution of cations containing HCl precipitates the cations of second group in qualitative analysis but not those belonging to the fourth group. It is because
Presence of HCl decreases the sulphide ion concentration.
Presence of HCl increases the sulphide ion concentration.
Solubility product of group 2nd sulphides is more than that of group iv sulphides
Sulphides of group iv cations are unstable in HCl
What is the [OH-] in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.10 M Ba(OH)2?
0.10 MNumber of milliequivalents of HCl =20×0.050×1=1Number of milliequivalents of Ba(OH)2 = 2×30×0.10=6[OH-] of final solution = milliequivalents of Ba(OH)2 - milliequivalents of HCl / Total volume = 6 - 1 / 50=0.1 M
0.40 M
0.0050 M
0.12 M
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
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 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
