319063 The degree of dissociation \(\left( \alpha \right)\) of weak electrolyte \({{\rm{A}}_{\rm{a}}}{{\rm{B}}_{\rm{b}}}\) is related to Van’t Hoff factor (i) by the expression

319064 A 0.5 molal aqueous solution of a weak acid (HX) is 20 percent ionised. The lowering in freezing point of this solution is
\(\left( {{{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{K/m}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {\rm{water}}} \right)\)

319065 Assertion :
\(\mathrm{NaCl}\) in water and organic acids in benzene show abnormal molecular mass.
Reason :
Abnormal molecular mass is obtained when the substance in the solution undergoes dissociation or association.

319066 An aqueous solution of a salt \({\rm{M}}{{\rm{X}}_{\rm{2}}}\) at certain temperature has a Van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :

319063 The degree of dissociation \(\left( \alpha \right)\) of weak electrolyte \({{\rm{A}}_{\rm{a}}}{{\rm{B}}_{\rm{b}}}\) is related to Van’t Hoff factor (i) by the expression

319064 A 0.5 molal aqueous solution of a weak acid (HX) is 20 percent ionised. The lowering in freezing point of this solution is
\(\left( {{{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{K/m}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {\rm{water}}} \right)\)

319065 Assertion :
\(\mathrm{NaCl}\) in water and organic acids in benzene show abnormal molecular mass.
Reason :
Abnormal molecular mass is obtained when the substance in the solution undergoes dissociation or association.

319066 An aqueous solution of a salt \({\rm{M}}{{\rm{X}}_{\rm{2}}}\) at certain temperature has a Van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :

319063 The degree of dissociation \(\left( \alpha \right)\) of weak electrolyte \({{\rm{A}}_{\rm{a}}}{{\rm{B}}_{\rm{b}}}\) is related to Van’t Hoff factor (i) by the expression

319064 A 0.5 molal aqueous solution of a weak acid (HX) is 20 percent ionised. The lowering in freezing point of this solution is
\(\left( {{{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{K/m}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {\rm{water}}} \right)\)

319065 Assertion :
\(\mathrm{NaCl}\) in water and organic acids in benzene show abnormal molecular mass.
Reason :
Abnormal molecular mass is obtained when the substance in the solution undergoes dissociation or association.

319066 An aqueous solution of a salt \({\rm{M}}{{\rm{X}}_{\rm{2}}}\) at certain temperature has a Van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :

319063 The degree of dissociation \(\left( \alpha \right)\) of weak electrolyte \({{\rm{A}}_{\rm{a}}}{{\rm{B}}_{\rm{b}}}\) is related to Van’t Hoff factor (i) by the expression

319064 A 0.5 molal aqueous solution of a weak acid (HX) is 20 percent ionised. The lowering in freezing point of this solution is
\(\left( {{{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{K/m}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {\rm{water}}} \right)\)

319065 Assertion :
\(\mathrm{NaCl}\) in water and organic acids in benzene show abnormal molecular mass.
Reason :
Abnormal molecular mass is obtained when the substance in the solution undergoes dissociation or association.

319066 An aqueous solution of a salt \({\rm{M}}{{\rm{X}}_{\rm{2}}}\) at certain temperature has a Van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :