Advertisements
Advertisements
Question
Assertion: Molarity of a solution in liquid state changes with temperature.
Reason: The volume of a solution changes with change in temperature.
Options
Assertion and reason both are correct statements and reason is correct explanation for assertion.
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
Assertion is correct statement but reason is wrong statement.
Assertion and reason both are incorrect statements.
Assertion is wrong statement but reason is correct statement.
Advertisements
Solution
Assertion and reason both are correct statements and reason is correct explanation for assertion.
Explanation:
(i) Strength of a solution in terms of 'Molarity (M)' is represents the number of moles of the solute dissolved per litre pf solution, i.e.
Morality = `"No. of moles of solute component"/"Volume of solution in litres"`
(ii) Since volume of a liquid varies with changes of temperatures, the volume of solution would also change while the number of moles of solute present in it will remain the same (or unchanged). This, therefore, would affect the molarity of the solution.
APPEARS IN
RELATED QUESTIONS
How is the sign of ΔmixH related to positive deviations from Raoult’s law?
Define an ideal solution and write one of its characteristics.
What type of intermolecular attractive interaction exists in the pair of methanol and acetone?
Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
Ideal solutions obey ………. law and they …………. form azeotropic mixtures.
(Henry’s, aldol condensation, absence, do not, ohm, Raoult’s, increases, common ion effect, easily, three, solubility product, ohm-1, two, four, ohm-1, cm2, Cannizzaro, ohm-1 cm-1, zero, decreases, presence)
The molality of a solution containing 1.8 g of glucose dissolved in 250 g of water is
Two liquids X and Y on mixing gives a warm solution. The solution is ______.
Assertion: An ideal solution obeys Raoults Law.
Reason: In an ideal solution, solvent – solvent as well as solute – solute interactions are similar to solute-solvent interactions.
State Raoult law and obtain the expression for lowering of vapour pressure when the nonvolatile solute is dissolved Insolvent.
For ideal solution the volume of mixing of the pure components to form the solution is ____________.
The rate at which a solid dissolves in liquid does not depend on ____________.
Which of the following condition is not satisfied by an ideal solution?
Which of the following is an example of a solid solution?
If two liquids A and B form minimum boiling azeotrope at some specific composition then ______.
Intermolecular forces between two benzene molecules are nearly of same strength as those between two toluene molecules. For a mixture of benzene and toluene, which of the following are not true?
(i) ∆mix H = zero
(ii) ∆mix V = zero
(iii) These will form minimum boiling azeotrope.
(iv) These will not form ideal solution.
Concentration terms such as mass percentage, ppm, mole fraction and molality are independent of temperature, however molarity is a function of temperature. Explain.
Assertion: When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side.
Reason: Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration solution.
If liquids A and B form an ideal solution, the ______.
1 mole of liquid A and 2 moles of liquid B make a solution having a total vapour pressure of 40 torr. The vapour pressure of pure A and pure B are 45 torr and 30 torr, respectively. The above solution ______.
Suggest the most important type of intermolecular attractive interaction in the following pair.
NaClO4 and water
