Glucose does not dissociate in water, hence the freezing point depression of glucose solution will be lowest. Thus, the freezing point of glucose solution will be the highest.
CHXII02:SOLUTIONS
318995
Statement A : When NaCl is added to water a depression in freezing point is observed. Statement B : The lowering of vapour pressure of a solution causes depression in the freezing point.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Conceptual Questions
CHXII02:SOLUTIONS
318996
Assertion : The mass of acetic acid molecules in benzene is more than the actual value of the solute, Reason : Molecules of acetic acid dimerise in benzene due to hydrogen bonding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetic acid (molar mass \(60 \mathrm{~g} / \mathrm{mol}\) ) dimerises in benzene due to hydrogen bonding between its molecules. Hence the molecular weight becomes double than that of normal value. So option (1) is correct.
CHXII02:SOLUTIONS
318997
Which of the following pair of solutions are expected to be isotonic at the same temperature?
1 \(0.2\, \mathrm{M}\) urea and \(0.2 \mathrm{M}\, \mathrm{NaCl}\)
2 \(0.1\, \mathrm{M}\) urea and \(0.2 \mathrm{M} \,\mathrm{MgCl}_{2}\)
3 \(0.1\, \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M}\, \mathrm{Na}_{2} \mathrm{SO}_{4}\)
4 \(0.1\, \mathrm{M} \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\) and \(0.1 \mathrm{M} \,\mathrm{Na}_{2} \mathrm{SO}_{4}\)
Explanation:
Both the solvents will furnish equal number of ions in solution. So, if value of \({\rm{'i'}}\) is same, the solutions will exert equal osmotic pressure i.e. isotonic. \({\text{Ca}}{\left( {{\text{N}}{{\text{O}}_3}} \right)_2} \rightleftharpoons {\text{C}}{{\text{a}}^{2 + }} + 2{\text{NO}}_3^ - ;{\text{i}} = 3\) \({\text{N}}{{\text{a}}_2}{\text{S}}{{\text{O}}_4} \rightleftharpoons 2{\text{N}}{{\text{a}}^ + } + {\text{SO}}_4^{2 - };{\text{i}} = 3\)
CHXII02:SOLUTIONS
318998
Which solution will have least vapour pressure?
Glucose does not dissociate in water, hence the freezing point depression of glucose solution will be lowest. Thus, the freezing point of glucose solution will be the highest.
CHXII02:SOLUTIONS
318995
Statement A : When NaCl is added to water a depression in freezing point is observed. Statement B : The lowering of vapour pressure of a solution causes depression in the freezing point.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Conceptual Questions
CHXII02:SOLUTIONS
318996
Assertion : The mass of acetic acid molecules in benzene is more than the actual value of the solute, Reason : Molecules of acetic acid dimerise in benzene due to hydrogen bonding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetic acid (molar mass \(60 \mathrm{~g} / \mathrm{mol}\) ) dimerises in benzene due to hydrogen bonding between its molecules. Hence the molecular weight becomes double than that of normal value. So option (1) is correct.
CHXII02:SOLUTIONS
318997
Which of the following pair of solutions are expected to be isotonic at the same temperature?
1 \(0.2\, \mathrm{M}\) urea and \(0.2 \mathrm{M}\, \mathrm{NaCl}\)
2 \(0.1\, \mathrm{M}\) urea and \(0.2 \mathrm{M} \,\mathrm{MgCl}_{2}\)
3 \(0.1\, \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M}\, \mathrm{Na}_{2} \mathrm{SO}_{4}\)
4 \(0.1\, \mathrm{M} \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\) and \(0.1 \mathrm{M} \,\mathrm{Na}_{2} \mathrm{SO}_{4}\)
Explanation:
Both the solvents will furnish equal number of ions in solution. So, if value of \({\rm{'i'}}\) is same, the solutions will exert equal osmotic pressure i.e. isotonic. \({\text{Ca}}{\left( {{\text{N}}{{\text{O}}_3}} \right)_2} \rightleftharpoons {\text{C}}{{\text{a}}^{2 + }} + 2{\text{NO}}_3^ - ;{\text{i}} = 3\) \({\text{N}}{{\text{a}}_2}{\text{S}}{{\text{O}}_4} \rightleftharpoons 2{\text{N}}{{\text{a}}^ + } + {\text{SO}}_4^{2 - };{\text{i}} = 3\)
CHXII02:SOLUTIONS
318998
Which solution will have least vapour pressure?
Glucose does not dissociate in water, hence the freezing point depression of glucose solution will be lowest. Thus, the freezing point of glucose solution will be the highest.
CHXII02:SOLUTIONS
318995
Statement A : When NaCl is added to water a depression in freezing point is observed. Statement B : The lowering of vapour pressure of a solution causes depression in the freezing point.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Conceptual Questions
CHXII02:SOLUTIONS
318996
Assertion : The mass of acetic acid molecules in benzene is more than the actual value of the solute, Reason : Molecules of acetic acid dimerise in benzene due to hydrogen bonding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetic acid (molar mass \(60 \mathrm{~g} / \mathrm{mol}\) ) dimerises in benzene due to hydrogen bonding between its molecules. Hence the molecular weight becomes double than that of normal value. So option (1) is correct.
CHXII02:SOLUTIONS
318997
Which of the following pair of solutions are expected to be isotonic at the same temperature?
1 \(0.2\, \mathrm{M}\) urea and \(0.2 \mathrm{M}\, \mathrm{NaCl}\)
2 \(0.1\, \mathrm{M}\) urea and \(0.2 \mathrm{M} \,\mathrm{MgCl}_{2}\)
3 \(0.1\, \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M}\, \mathrm{Na}_{2} \mathrm{SO}_{4}\)
4 \(0.1\, \mathrm{M} \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\) and \(0.1 \mathrm{M} \,\mathrm{Na}_{2} \mathrm{SO}_{4}\)
Explanation:
Both the solvents will furnish equal number of ions in solution. So, if value of \({\rm{'i'}}\) is same, the solutions will exert equal osmotic pressure i.e. isotonic. \({\text{Ca}}{\left( {{\text{N}}{{\text{O}}_3}} \right)_2} \rightleftharpoons {\text{C}}{{\text{a}}^{2 + }} + 2{\text{NO}}_3^ - ;{\text{i}} = 3\) \({\text{N}}{{\text{a}}_2}{\text{S}}{{\text{O}}_4} \rightleftharpoons 2{\text{N}}{{\text{a}}^ + } + {\text{SO}}_4^{2 - };{\text{i}} = 3\)
CHXII02:SOLUTIONS
318998
Which solution will have least vapour pressure?
Glucose does not dissociate in water, hence the freezing point depression of glucose solution will be lowest. Thus, the freezing point of glucose solution will be the highest.
CHXII02:SOLUTIONS
318995
Statement A : When NaCl is added to water a depression in freezing point is observed. Statement B : The lowering of vapour pressure of a solution causes depression in the freezing point.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Conceptual Questions
CHXII02:SOLUTIONS
318996
Assertion : The mass of acetic acid molecules in benzene is more than the actual value of the solute, Reason : Molecules of acetic acid dimerise in benzene due to hydrogen bonding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetic acid (molar mass \(60 \mathrm{~g} / \mathrm{mol}\) ) dimerises in benzene due to hydrogen bonding between its molecules. Hence the molecular weight becomes double than that of normal value. So option (1) is correct.
CHXII02:SOLUTIONS
318997
Which of the following pair of solutions are expected to be isotonic at the same temperature?
1 \(0.2\, \mathrm{M}\) urea and \(0.2 \mathrm{M}\, \mathrm{NaCl}\)
2 \(0.1\, \mathrm{M}\) urea and \(0.2 \mathrm{M} \,\mathrm{MgCl}_{2}\)
3 \(0.1\, \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M}\, \mathrm{Na}_{2} \mathrm{SO}_{4}\)
4 \(0.1\, \mathrm{M} \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\) and \(0.1 \mathrm{M} \,\mathrm{Na}_{2} \mathrm{SO}_{4}\)
Explanation:
Both the solvents will furnish equal number of ions in solution. So, if value of \({\rm{'i'}}\) is same, the solutions will exert equal osmotic pressure i.e. isotonic. \({\text{Ca}}{\left( {{\text{N}}{{\text{O}}_3}} \right)_2} \rightleftharpoons {\text{C}}{{\text{a}}^{2 + }} + 2{\text{NO}}_3^ - ;{\text{i}} = 3\) \({\text{N}}{{\text{a}}_2}{\text{S}}{{\text{O}}_4} \rightleftharpoons 2{\text{N}}{{\text{a}}^ + } + {\text{SO}}_4^{2 - };{\text{i}} = 3\)
CHXII02:SOLUTIONS
318998
Which solution will have least vapour pressure?
Glucose does not dissociate in water, hence the freezing point depression of glucose solution will be lowest. Thus, the freezing point of glucose solution will be the highest.
CHXII02:SOLUTIONS
318995
Statement A : When NaCl is added to water a depression in freezing point is observed. Statement B : The lowering of vapour pressure of a solution causes depression in the freezing point.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Conceptual Questions
CHXII02:SOLUTIONS
318996
Assertion : The mass of acetic acid molecules in benzene is more than the actual value of the solute, Reason : Molecules of acetic acid dimerise in benzene due to hydrogen bonding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetic acid (molar mass \(60 \mathrm{~g} / \mathrm{mol}\) ) dimerises in benzene due to hydrogen bonding between its molecules. Hence the molecular weight becomes double than that of normal value. So option (1) is correct.
CHXII02:SOLUTIONS
318997
Which of the following pair of solutions are expected to be isotonic at the same temperature?
1 \(0.2\, \mathrm{M}\) urea and \(0.2 \mathrm{M}\, \mathrm{NaCl}\)
2 \(0.1\, \mathrm{M}\) urea and \(0.2 \mathrm{M} \,\mathrm{MgCl}_{2}\)
3 \(0.1\, \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M}\, \mathrm{Na}_{2} \mathrm{SO}_{4}\)
4 \(0.1\, \mathrm{M} \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\) and \(0.1 \mathrm{M} \,\mathrm{Na}_{2} \mathrm{SO}_{4}\)
Explanation:
Both the solvents will furnish equal number of ions in solution. So, if value of \({\rm{'i'}}\) is same, the solutions will exert equal osmotic pressure i.e. isotonic. \({\text{Ca}}{\left( {{\text{N}}{{\text{O}}_3}} \right)_2} \rightleftharpoons {\text{C}}{{\text{a}}^{2 + }} + 2{\text{NO}}_3^ - ;{\text{i}} = 3\) \({\text{N}}{{\text{a}}_2}{\text{S}}{{\text{O}}_4} \rightleftharpoons 2{\text{N}}{{\text{a}}^ + } + {\text{SO}}_4^{2 - };{\text{i}} = 3\)
CHXII02:SOLUTIONS
318998
Which solution will have least vapour pressure?