List of top Chemistry Questions on Solutions

Demineralised water can be obtained by using
Which of following is responsible for temporary hardness of water?
A 2 kg water sample contains 408 mg of $CaSO_{4}$ (M.wt=136). The hardness in terms of $CaCO_{3}$ equivalents (in ppm) is
The mass of $Na_{2}CO_{3}$ (in g) (M.wt=106) present in 1.0 L of 0.05 M solution is
A gaseous mixture contains 14 g of $N_{2}$, 8.0 g of $O_{2}$ and 8.0 g of $H_{2}$. Total number of molecules present in the mixture is ($N_{A}$ = Avogadro number) (At.wt; H=1, N=14, O=16)}
A solution is prepared by dissolving 0.025 g of potassium sulphate in 2 L of water at 27$^\circ$C. Assuming potassium sulphate is completely dissociated, determine its osmotic pressure. Given: \[ R=0.082 \, L\,atm\,K^{-1}mol^{-1} \] \[ \text{Molar mass of }K_2SO_4=174\,g\,mol^{-1} \] (ii) What type of azeotrope will be formed by a solution of acetone and chloroform? Give reason.
The mole fraction of a solute in 2.0 molal aqueous solution is :
For an ideal binary liquid mixture:
A binary solution containing two volatile solutes A and B shows positive deviation from Raoult’s law. Which of the following statement is true?
The relative lowering of vapour pressure of an aqueous solution containing a non-volatile solute is 0.0125. The molality of the solution is
At $300\,\mathrm{K}$, a certain reaction has an equilibrium constant equal to 10. The value of $\Delta G^\circ$ for this reaction (in $\mathrm{kJ\,mol^{-1}}$) is:} \[ (R=8.314\,\mathrm{J\,K^{-1}mol^{-1}}) \]
At 293 K, HCl(g) is dissolved in cyclohexane. Identify the graph obtained for this solution (x-axis = mole fraction of HCl dissolved in cyclohexane; y-axis = partial pressure of HCl(g)).
What will happen to the boiling point of the solution on mixing phenol and aniline?
What type of deviation from Raoult's law is shown by a mixture of phenol and aniline? Give reason.
Assertion (A): It is not possible to separate the components of an azeotrope by fractional distillation.
Reason (R): Components of an azeotrope have the same composition in liquid and vapour phase and boil at a constant temperature.
The mole fraction of a solute in 2.0 molal aqueous solution is :
Identify the pair of gases which have same number of molecules at S.T.P?
Which of the following has highest equivalent weight? (Given: At.wt $H=1, C=12, O=16, S=32, Na=23, Ca=40$)
12.6 g of oxalic acid, $H_{2}C_{2}O_{4} \cdot 2H_{2}O$ (M.wt 126) is present in 1500 mL of solution. The normality of that solution is
Consider the dissociation equilibrium of the following weak acid: \[ \mathrm{HA \rightleftharpoons H^+(aq) + A^-(aq)} \] If the \(pK_a\) of the acid is \(4\), then the pH of a \(10\ \text{mM}\) HA solution is ________ (Nearest integer). (Given: The degree of dissociation can be neglected with respect to unity)
State Henry’s law. Calculate the mole fraction of CO\(_2\) in water at 298 K under 700 mm Hg pressure. (Given: Henry’s constant for CO\(_2\) in water at 298 K = \( 1.25 \times 10^6 \) mm Hg)
Calculate the boiling point of a solution containing 0.61 g of benzoic acid (122 \( g mol^{-1} \)) in 5 g of \( CS_2 \) in which it dimerises to 88%. \( T_b^\circ(CS_2) = 46.2^\circ C, K_b = 2.3 K kg mol^{-1} \).
Match List - I (Laws) with the List - II (Mathematical expressions):
Codes:
Which of the following is CORRECT with respect to the property mentioned against it?
Calculate the mass percentage of benzene if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.