Question 2 : The temperature at which vapour pressure of a solvent in its liquid and solid phase becomes same is called :

Question 3 : The energy that opposes the dissolution of a solute in a solvent is called :

Question 4 : A {tex}0.001{/tex} molal solution of {tex} \left[ \mathrm { Pt } \left( \mathrm { NH } _ { 3 } \right) \mathrm { Cl } _ { 4 } \right] {/tex} in water had a freezing point depression of {tex} 0.0054 ^ { \circ } \mathrm { C } {/tex}. If {tex} \mathrm { K } _ { f } {/tex} for water is {tex} 1.80 , {/tex} the correct formulation for the above molecule is

Question 6 : At a particular temperature, the vapour pressures of two liquids {tex} \mathrm { A } {/tex} and {tex} \mathrm { B } {/tex} are respectively {tex}120{/tex} and {tex} 180 \mathrm { mm } {/tex} of mercury. If 2 moles of {tex} \mathrm { A } {/tex} and 3 moles of B are mixed to form an ideal solution, the vapour pressure of the solution at the same temperature will be (in mm of mercury)

Question 7 : Sodium sulphate is soluble in water, while barium sulphate is sparingly soluble because :

Question 11 : The statement the relative lowering of the vapour pressure is equal to th ratio ot moles of the solute to the total number of the moles in the solution refers to

Question 13 : The solubility of a solid in a liquid depends on :

Question 14 : If 117 g NaCl is dissolved in 1000 g of water the concentration of the solution is said to be

Question 15 : A solution containing 10 g per <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead68ec86ab836963763f9c"> of urea (mol. mass = 60) is isotonic with a 5% (wt. by vol.) solution of a non-volatile solute. The molecular mass (in g <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead69b241e6ca4117818e37"> ) of non-volatile solute is :

Question 16 : One mole of non-volatile solute is dissolved in two mole of water. The vapour pressure of the solution relative to that of water is :

Question 17 : The expression relating molality {tex}\mathrm {(m)}{/tex} and mole fraction {tex} ( \mathrm { X } _ { \mathrm { B } } ) {/tex} of solute in a solution is. {tex} ( \mathrm { X } _ { \mathrm { A } } {/tex} mole fraction of solvent) {tex} ( \mathrm { M } _ { \mathrm { A } } = {/tex} Molecular mass of solvent) {tex} ( \mathrm { M } _ \mathrm { B }={/tex} Molecular mass of solute):

Question 18 : The vapour pressure of pure liquid is 1.2 atm. When a non-volatile substance <i>B</i> is mixed in <i>A</i>, then its vapour pressure becomes 0.6 atm. The mole fraction of <i>B</i> in the solution is

Question 23 : If 2 moles of A and 3 moles of B are mixed to form an ideal solution vapour pressure of A and B are 120 and 180 mm of Hg respectively. then the composition of A and B in the Vapour phase when the first traces of vapour are formed in the above case is:

Question 24 : The following substances were all&#160;dissolved in 100 grams of water at&#160;290 K to produce saturated&#160;solutions.If the solution is heated to 310 K, which substance will have a decrease in its solubility:

Question 25 : Pure or distilled water is not used for drinking, mainly because:

Question 28 : An ideal solution if obtained by mixing $CH_3 CHBr_2$ and $CH_2Br - CH_2Br$ in the ratio $2:1$<br/>$P^o_{CH_3CHBr_2} = 173, P^o_{CH_2BrCH_2Br} = 127$. Thus total vapour pressure is:

Question 29 : In steam distillation, the vapour pressure of the volatile organic compound is:

Question 30 : The vapour pressure of two liquids $P$ and $Q$ are $80$ torr and $60$ torr respectively. The total vapour pressure obtained by mixing $3$ mole of P and $2$ mole of $Q$ would be:

Question 31 : Two liquids X and Y are perfectly immiscible. If X and Y have molecular masses in ratio 1 : 2, the total vapour pressure of a mixture of X and Y prepared in weight ratio 2 : 3 should be ($Px^0 = 400 torr, Py^0 = 200 torr$)<br>

Question 32 : Two liquids $X$ and $Y$ from an ideal solution. At $300K$, a vapour pressure of the solution containing $1$ mol of $X$ and $3$ mol of $Y$ is $550$ $mm \ Hg$. At the same temperature, if $1$ mol of $Y$ is further added to this solution, a vapour pressure of the solution increased by $10$ $mm \ Hg$. Vapour pressure ( in mmHg) of $X$ and $Y$ in their pure states will be respectively:&#160;

Question 33 : A china dish weighs 25 g when empty. When a saturated solution of potassium chloride is poured into it at 40$^o$C, the weight of the dish is 63 g. When the solution is totally evaporated, the chine dish along with the crystals weighs 40 g. Find the solubility of potassium chloride at 40$^0$C.

Question 35 : The values of the Henry's law constant of $Ar,CO_2,CH_4$ and $O_2$ in water at $25^0C$ are $40.30,1.67,0.41$ and $34.86\,kbar$, respectively. The order of their solubility in water at the same temperature and pressure is:&#160;