The electrolyte having the same value of Van't Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionized) is:
1. K2SO4
2. K3[Fe(CN)6]
3. Al(NO3)3
4. K4[Fe(CN)6]
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe Van't Hoff factor for 0.1 M Ba(NO3)2 solution is 2.74. The degree of dissociation is -
1. 91.3 %
2. 87 %
3. 100 %
4. 74 %
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe van’t Hoff factor, i, for a compound that undergoes
dissociation and association in a solvent is, respectively:
1. Less than one and less than one.
2. Greater than one and less than one.
3. Greater than one and greater than one.
4. Less than one and greater than one.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe van't Hoff factor of a 0.005 M aqueous solution of KCl is 1.95. The degree of ionisation of KCl is-
1. 0.95
2. 0.97
3. 0.94
4. 0.96
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe van’t Hoff factor (i) for a dilute aqueous solution of a strong electrolyte barium hydroxide is:
1. 0
2. 1
3. 2
4. 3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA 0.0020 m aqueous solution of an ionic compound Co(NH3)5(NO2)Cl freezes at -0.0073 oC. The number of moles of ions that 1 mol of ionic compound produces on being dissolved in water will be:
(Kf = -1.86 oC/m)
1. | 2 | 2. | 3 |
3. | 4 | 4. | 1 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology17.4 % (w/v) solution at 27 C is isotonic to 5.85 % (w/V) NaCl solution at 27 C. lf NaCl is 100 % ionised, the % ionisation of in aqueous solution is-
[At wt. of K = 39, Na = 23] :-
1. 25 %
2. 75 %
3. 50 %
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology0.5 molal aqueous solution of a weak acid (HX) is 20 % ionised. The lowering in the freezing point of the solution will be:
[Kf for water = 1.86 K kg mol-1]
1. -1.12 K
2. 0.56 K
3. 1.12 K
4. -0.56 K
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the relative decrease in vapour pressure is 0.4 for a solution containing 1 mol NaCl in 3 mol of , then percentage ionisation of NaCl will be -
1. 60%
2. 80%
3. 40%
4. 100%
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThree aqueous solutions of NaCl are labelled as ‘A', ‘B’ and ‘C with concentrations 0.1 M, 0.01 M and 0.001 M, respectively. The value of van’t Hoff factor for these solutions will be in the order of :
1. iA < iB < iC
2. iA > iB > iC
3. iA = iB = iC
4. iA < iB > iC
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology