Solutions Questions and Answers

1 In bromoethane and chloroethane mixture intermolecular interactions of A A and B B type are nearly the same as A B type interactions II In ethanol and acetone mixture A A or B B type intermolecular interactions are stronger than A B type interactions III In chloroform and acetone mixture A A or B B type intermolecular interactions are weaker than A B type interactions A B C D Solution II and III will follow Raoult s law Solution 1 will follow Raoult s law Solution II will show negative deviation from Raoult s law Solution III will show positive deviation from Raoult s law

4 CO carboxyhaemoglobin is carried in 4 0 20 M haemoglobin as 89 A cell is placed in 0 4 M solution of sugar and no change in volume of cell is found What is the concentration of the cell sap 1 40 M 2 4 M 3 0 4 M

Calculate the osmotic pressure at 25 C of an aqueous solution of 1 00 g L of a protein having molar mass 1 85x10 g mol

What is the mass of ammonium chloride in a 1 73 M ammonium chloride aqueous solution at 20 C Density of the solution is 1 0257 g mL Select one a 0 594 b 1 68 c 1 85 X d 9 00

Assertion Vapour pressure of water is less than 1 013 bar at 373 K Reason Water boils at 373 K as the vapour pressure at this temperature becomes equal to atmospheric pressure A B C D 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 is wrong statement but is correct statement

2 Two beakers of capacity 500 mL were taken One of these beakers labelled as A was filled with 400 ml water whereas the beaker labelled B was filled with 400 mL of 2 M solution of NaCl At the same temperature both the beakers were placed in closed containers of same material and same capacity as shown in figure A B Water NaCl solution At a given temperature which of the following statements is correct about the vapour pressure of pure water and that of NaCl solution a Vapour pressure in container A is more than that in container B b Vapour pressure in container A is less than that in container B c Vapour pressure is equal in both the containers d Vapour pressure in containor R is twice the

A sample of water has a hardness expressed as 80 ppm of Ca This sample is passed through an ion exchange column and the Ca is replaced by H What is the pH of the water after it has been so treated Atomic mass of Ca 40 1 3 2 2 7 3 5 4 4 2 4

Which solution would have the greatest buffering capacity Select one a 0 189 M HF and 0 103 M NaF Ob 1 15 M HF and 0 624 M NaF c 0 574 M HF and 0 312 M NaF d They are all buffer solutions and would all have the same capacity e 0 287 M HF and 0 156 M NaF X

The PEC diagram to the right indicates the mixing behavior of A and B Based on the PEC diagram which of the following interactions are the STRONGEST I A A interactions II B B interactions III A B interactions PE UM II and III M C

One 591 mL bottle of Gatorade a popular sports drink contains 35 g of sugar If the sugar compound is glucose C6H12O6 what is the molar concentration of glucose in Gatorad Choose the closest answer Note 1 M 1 mol L O 0 11 M 03 4 M O 11 0 M 01 2M 0033 M

c 0 125 M Na3PO4 aq has the highest osmotic pressure d 0 500 M C H5OH aq has the highest osmotic pressure 5 Por a dilute solution containing 2 5 g of a non volatile non electrolyte solute in 100 g of water the elevation in boiling point at 1 atm pressure is 2 C Assuming concentration of solute is much lower than the concentration of solvent the vapour pressure mm of Hg of the solution is take K 0 76 K kg mol 2012 a 724 V c 736 b 740 d 718

178 A 25 0 mL sample of 0 10 M HCl is titrated with 0 10 M 178 0 10 M HC500 M Na 4 55 x 10 3 NaOH What is the pH of the solution at the points where Fall 24 9 25 1 mL NaOH for all 24 9 and 25 1 mL of NaOH have beeen added 1 3 70 10 70 2 3 30 10 30 3 3 70 10 30 4 3 0 11 0 179 Which of the following is a buffer solution 1 500 mL of 0 1 N CH3 COOH 500 mL of 0 1 N NaOH 1 3 70 10 70 2 3 30 10 30 33 70 10 30 4 3 0 11 0 179 a facer 1 500 mL of 0 1 N CH3 COOH 500 mL of 0 1 N NaOH

2 In what ratio should a 15 solution of acetic acid be mixed with a 3 solution of the acid to prepare a 10 solution all percentages are mass mass percentages A 7 3 B 5 7 e 7 5 D 7 10 3 X gram of pure As S is completely oxidised to respective highest oxidation states by 50 ml of 0 1 M hot

Which of the following is incorrect for slaked lime Question Type Single Correct Type 1 2 It is a white amorphous powder It is sparingly soluble in water 3 It is amphoteric I gives ching conation wit

3 Two students prepare two cyclohexane solutions having the same mass of cyclohexane Sally uses 1 20 g of a solute and George uses 0 22 g of the same solute Who will observe the larger freezing poin change Explain

Question 27 Two open beakers one containing a solvent and the other containing a mixture of that solvent with a non volatile solute are together sealed in a container Over time Options a the volume of the solution decreases and the volume of the solvent increases b the volume of the solution and the solvent does not change c the volume of the solution increases and the volume of the solvent decreases d the volume of the solution does not change and the volume of the solvent decreases H O g the observed rate

0 At 35 C the vapour pressure of CS is 512 mm Hg and of acetone CH COCH3 is 344 mm Hg A solution of CS and acetone in which the mole fraction of CS2 is 0 25 has a total vapour pressure of 600 mm Hg Which of the following statements about solution of acetone CS is true 1 A mixture of 100 ml of acetone and 100 ml of CS has a total volume of 200 ml 2 When acetone and CS2 are mixed at 35 C heat must be absorbed in order to produce a solution at 35 C 3 When acetone and CS2 are mixed at 35 C heat is released 4 Raoult s law is obeyed by both CS and acetone for the solution in which the mole fraction of CS is 0 25 For an ideal gas number of moles per litre in terms of its pressure P gas constant R and temperature

Determine the degree of association polymerization for the reaction in aqueous solution if observed mean molar mass of HCHO and C6H12O6 is 150 NET ot 6HCHO a 0 50 b 0 833 C6H12O6 c 0 90 T d 0 96 MTH Mous

Q 21 O O The molecular conductivity and equivalent conductivity are same for the solution of O O 4 1 M NaCl 1 M Ba NO 32 1 M La NO3 3 00 31 1M Th NO 3 4 O 000

Q 20 moderate The depression in f p of 0 01 m aqueous solution of urea sodium chloride and sodium sulphate is in the ratio O 1 1 1 O 1 2 3 O 1 2 4 O 4 1 00 21 2 2 3

Choose the correct statement about Henry s constant 1 KH in bar increases with increase in temperature generally II KH in bar decreases with increase in temperature generally III KH in bar is the characteristic constant of gas solvent system Question Type Single Correct Type 1 1 III 2 11 III 3 1 11

Q 22 moderate O 1 In a 0 2 molal aqueous solution of a weak acid H X the degree of ionization is 0 3 00 30 Taking K for water as 1 85 the freezing point of the solution will be nearest to O 360 0 260 C

What will be the concentration of Pb 2 ions when PbSO4 Ksp 1 8 10 8 starts to precipitate from a solution of SO4 2 ions with 0 0045 M concentration Question Type Single Correct Type 1 2 3 4 4 x 10 6 M 4 x 10 8 M 2 x 10 8 M 8 1 x 10 7 M

The solubility of a solid in H O at different temperature is indicated in accompanying diagram W mass of solid will crystallize when 40ml of a solution that is saturated at 80 C is cooled to 20 C A 30g B 24g C 36g D 12g solubility g per 100 ml H O 19 20 40 60 80 100 Temperature t C

C 0 99 d 0 01 4 H S gas is used in qualitative analysis of inorganic cations Its solubility in water at STP is 0 195 mol kg Thus Henry s law constant in atm molal for H S is a 0 195 c 3 897 10 b 5 128 d 2 565 10 4

Q 3 4 10 K kg mo O 10 Kg mol O 10 K kg mol 1 The increase in boiling point of a solution containing 0 6 g urea in 200 g water is 0 50 C Find the molal elevation constant 00 16

Q 4 O O moderate 40 by weight solution will contain how much mass of the solute in 1L solution density of the solution is 1 2 g mL 480 g 48 g O 38 g 4 1 00 21 O

65 A weak acid HA with an ionization constant of approximately 10 is prepared in a 1 0 molar aqueous solution What will happen to the percent dissociation of this acid as more pure water is added to the solution 1 Percent dissociation remains unchanged 2 Percent dissociation will increase 3 Percent dissociation will decrease 4 The ionization constant will increase If the solubility of A X BX and CX salts are 65 X 66 3 10 7 10 31 facen 1 2 f 3 waard 4 3 afe aut

A 1 96 solution of H SO4 in water freezes at 0 794 C If K of water is 1 86 K kg mol and density of solution is 1 0 g mL the value of ionization constant for the following reaction is HSO4H SO a 0 146 c 2 104 b 4 10 d 5 10 6

50 ml Toluene CH CH g undergoes combustion with excess of oxygen Calculate the volume contraction A 50 ml B 150 ml C 75 ml D 100 ml The questions below to consist of an Assertion and the Reason Mark appropriate option using the given directions

a 20 kJ c 115 kJ d 0 115 kJ The solution of CuSO4 in which copper rod is immersed is diluted to 10 times the reduction electrode potential a increases by 0 030 V c increases by 0 059 V b decreases by 0 030 V d decreases by 0 059 V

6 On adding AgNO3 solution to KI solution a negatively charged colloidal solution will be formed in which of the following conditions a 100 mL of 0 1M AgNO3 100 mL of 0 1M KI b 100 mL of 0 1M AgNO3 50 mL of 0 2M KI c 100 mL of 0 2M AgNO3 100 mL of 13 0 0 1M KI d 100 mL of 0 1M AgNO3 100 mL of 0 15M KI

9 For which of the following parameters the structural isomers C ll5OH and CH3OCH 3 would be expected to have the same values assume ideal behaviour 2004 1 Heat of vaporization 2 Gaseous densities at the same temperature and pressure 3 Boiling points

5 neet prep Mini Test 20 Solubility Product mol L Then find out Ksp of electrolytes 1 5 x 10 2 25 10 10 3 1 x 10 13 13 P Contact Number 9667591930 852752171 25 There sparingly soluble saltrs A X AX and AX3 have the same solubility product Their solubilities will be in the order 1 AX AX A X 2 AX A X AX

Consider the following solution 1 M aqueous glucose 1 M aqueous NaCl 1 M aqueous calcium phosphate 1 M benzoic acid in benzene Select the correct statements for the above solutions I II V O all are isotonic solution O III is hypertonic than I II IV IV is hypotonic than I II III Il is hypotonic than III but hypertonic than I and IV

AgNO3 aq was added to an aqueous KCl solution gradually and the conductivity of the solution w measured The plot of conductance A versus the volume of AgNO3 is A P C R A volume P yu H volume S volume Q volume R B Q D S

Q3 A mixture of AIPO4 s and AIPO3 s is shaken with water until a saturated solution is formed Both of the solids remain in excess What is A1 in the saturated solution For AIPO4 Ksp 1 3x10 6 and for AIPO3 Ksp 3 5 10 4

Acidulated water on being electrolysed for some time the total volume of oxygen and hydrogen liberated is 16 8L when measured at NTP In this process charge utilized is found to be x Farads Find x

Which of the following is not a colligative property Relative lowering of vapour pressure Elevation in the boiling point Freezing point Osmotic pressure

The mass of urea that would be dissolved in 180 g of water in order to produce the same lowering of vapour pressure a is produced by dissolving 19 g of cane sugar C12H22011 in 100 g of water is 10 g 5 g 3 5 g hr min 6 g

4 The partial pressure of nitrogen in air is 0 76 atm and its Henry s law constant is 7 6 x 10 atm at 300K What is the molefraction of nitrogen gas in the solution obtained when air is bubbled through water at 300K a 1 x 104 b 1 x 10 c 2 10 d 1 10

Ta tify the correct statement a vapour pressure of solution is higher than that of pure solvent b boiling point of solvent is lower than that of solution c osmotic pressure of solution is lower than that of solvent d osmosis is a colligative property

cooled to 3 534 C What weight of ice would be separated out at this temperature K H O 1 86 K mol kg f 1 352 98 gm 2 252 98 gm 3 302 98 am

18 gram of glucose dissolved in 90 gram of water If the vapour pressure of water at room temperture 25 5 torr What will be the vapour pressure of solution at same temperature 1 25 torr 20 torr 3 18 torr 15 torr 2 4

The total vapour pressure of a 8 mol solution of NH3 g in water at 300 K is 100 torr The vapour pressure of pure water is 20 torr at 300 K Applying Henry s law for solute and Raoult s law for solvent The total vapour pressure of 10 mol solution of NH3 g in water at 300 K is 120 Torr 118 Torr 98 Torr

Which of the following statements is correct for the non ideal solutions Select one a Activity coefficient is less than one means that the solute finds the vapor more suitable environment than that of an ideal solution under the same condition b Activity coefficient is more than one means that the solute finds the solution more suitable environment than that of an ideal solution under the same condition c Activity coefficient is less than one means that the solute finds the solution more suitable environment than that of an ideal solution under the same condition d Activity coefficient is more than one means that the solute finds the solution more suitable environment than that of an ideal solution under the same condition

a Calculate The molarity of 400 ml of solution that is prepared by dissolving 34 8 gram K2SO4 salt K2SO4 174 10p b The density of 41 by mass Na3PO4 solution is 0 8 g ml Na3PO4 164 i Find the molar concentration of NasPO4 solution 5p ii Find the total ion concentration of Na3PO4 solution 5p

20 mL of 0 1 M solution of compound Na2CO3 NaHCO3 2H O is titrated against 0 05 M HCI x mL of HCI is used when phenolphthalein is used as an indicator and y mL of HCI is used when methyl orange is the indicator in two separate titrations Hence y x is A B C D 40 mL 80 mL Correct Answer 120 mL None of these

33 An aquepus solution consisting of 5 M BaCl 58 8 w v NaCl solution 2m Na X has a density of 1 949 gm ml Mark the option s which represent correct molarity M of the specified ion uring potentieth Assume 100 dissociation of each salt and molecular mass of X is 96 A CI 20 M B Na 11 M C Total anions 20 5 M D Total cations 15 M Sol

Which of the following order given below is are incorrect for the property indicated against it 3 OCT CIO CIO CIO CI O bond distance HCIO HBrO HIO acidic strength C1 F Br I Electron gain enthalpy H F H Cl H Br H 1 Bond energy