Solutions

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Helium is used to dilute oxygen in diving apparatus. Reasons R: Helium has high solubility in $O_{2}$ In…

The mass of sodium acetate $\left(\mathrm{CH}_{3}\mathrm{COONa}\right)$ required to prepare $250\mathrm{mL}$ of $0.35M$ aqueous solution is _____ g.$($ Molar mass of $\mathrm{CH}_{3}\mathrm{COONa}$ is…

\(2.5 $\mathrm{~g}\)$ of a non-volatile, non-electrolyte is dissolved in \(100 $\mathrm{~g}\)$ of water at $\(25^{\circ}$ $\mathrm{C}\).$ The solution showed a boiling point elevation by $\(2^{\circ}$ $\mathrm{C}\).$…

The percentage dissociation of a salt $\left(\mathrm{MX}_3\right)$ solution at given temperature (van't Hoff factor $\mathrm{i}=$ 2) is ______ % (Nearest integer)

A non-volatile, non-electrolyte solid solute when dissolved in $40$ g of a solvent, the vapour pressure of the solvent decreased from $760$ mm Hg to $750$ mm Hg. If the same solution boils at $320$ K, then the number of…

Two liquids A and B form an ideal solution. At 320 K, the vapour pressure of the solution, containing 3 mol of A and 1 mol of B is 500 mm Hg. At the same temperature, if 1 mol of A is further added to this solution,…

\(2.7 $\mathrm{~kg}\)$ of each of water and acetic acid are mixed. The freezing point of the solution will be $\(-x^{\circ}$ $\mathrm{C}\).$ Consider the acetic acid does not dimerise in water, nor dissociates in water.…

When 1 g each of compounds AB and $\mathrm{AB}_2$ are dissolved in 15 g of water separately, they increased the boiling point of water by 2.7 K and 1.5 K respectively. The atomic mass of A (in amu) is ____ $\times…

Considering acetic acid dissociates in water, its dissociation constant is \(6.25 $\times$ $10^{-5}\).$ If \(5 $\mathrm{~mL}\)$ of acetic acid is dissolved in 1 litre water, the solution will freeze at \(-x $\times$…

Consider separate solutions of $0.500MC_{2}H_{5}\mathrm{OH}\left(\mathrm{aq}\right),0.100M\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\left(\mathrm{aq}\right),0.250M\mathrm{KBr}\left(\mathrm{aq}\right)$and…

Sodium oxide reacts with water to produce sodium hydroxide. $20.0g$ of sodium oxide is dissolved in $500\mathrm{mL}$ of water. Neglecting the change in volume, the concentration of the resulting $\mathrm{NaOH}$ solution…

A gaseous mixture of two substances $A$and $B$, under a total pressure of $0.8\mathrm{atm}$ is in equilibrium with an ideal liquid solution. The mole fraction of substance $A$ is $0.5$in the vapour phase and $0.2$in the…