change in volume when 100 ml PH₃ decomposed to solid p &H₂gas.

1. increase in 50 ml
2. decrease in 50 ml
3. increase in 150 ml
4. decrease in 200 ml

what is the effect of temperature and pressure of coordination number of ionic crystals?Explain in detail.

Which statement is true for solution of0.020 MH₂SO_4...........

a) 2 litre of the solution contains 0.020 mole of SO₄^2-.
b) 2 litre of the solution contains 0.080 mole of H₃O⁺.
c) 1 litre of the solution contains 0.020 mole of H₃O⁺.
d) None of these.

Please explain in detail.........
Everyone, please share their answers for the question

The vapour pressure of an aqueous solution of glucose is 750 mm Hg at 373 K . Calculate molality and mole fraction of solute.

People taking a lot of salt or salty food experience water retention in tissue cells and intercellular spaces because of osmosi.But,I think one person should lose the watwer as per osmosissolvent moves from lower concentration (cells ) to higher concentration of solution(salt water)..Then how will water will be retained,

what volume of 75% sulfuric acid by mass is required to prepare 1.5 Lt of 0.2 M sulfuric acid solution ??

in ideal solution of non volatile solute B and solvent Ain 2 :5 molar ratio has vapour pressure 250 mm. if a another solution in ratio 3:4 prepared then vapour pressure above this solution

1) 200 mm

2) 250 mm

3) 350 mm

4) 400 mm

Which of the following will have highest boiling point?

a. 0.1M FeCl₃ b. 0.1M Urea c. 0.1M NaCl d. 0.1 M Glucose

a solution containing 8.6 g/L of urea is isotonic with 5% solution of unknown solute . The molar mass of solute will be

1) 348.9 g/mol

2) 174.5 g/mol

3) 87.3 g/mol

4) 34.89 g/mol

give reason for the following

1. tetrahedral Ni(2) complexes are paramagnetic but square planar Ni(2) complex are diamagnetic

2. only transition metals are know to form pie complexes ..

K4[Fe(CN)6] is supposed to be 40% dissiciated when 1M solution prepared . its boiling point is equal to another 20% mass by volume of non-electrolytic solution A . Considering molality=molarity. The molecular weight of A is

1) 77

2) 67

3) 57

4) 47

which of the following statemant are correct for a binary solution which shows negative deviation from roult's law

1. The negative deviation from linearity diminishes and tend to zero as the conc. of the solution component approaches unity.
2. when the solution form , their volume are smaller than the sum of the volumes of their components.
3. heat is released during the formation of the solution.
4. heat is evolved during the formation of the solution.

substance A tetramerises in water to a extent of 80% . A solution of 2.5g of A in 100g of water lowers the freezing point by 0.3degree C . The molar mass of A is

1) 122

2) 31

3) 244

4) 62

If for a particular solution , deviation in freezing point is 0.73degre , K_f = 5.028K Kg/mol, what is the molaliy of the solution.

1. 0.1452
2. 23.76
3. 132.6
4. 0.8766

20 ml of 0.2M Al₂(SO₄)₃ is mixed with 20ml of 6.6 M BaCl₂ , the concertration of Cl^- ion in solution is

1) 0.2

2) 6.6

3) 0.02

4) 0.06

what happens when saturated solution of KCl is heated..??

which of the solutions wil have a lower vapour pressure and why?

1. a 5% solution of cane sugar

2. a 5% solution of urea

1000g aqueous solution of CaCO3 contain 10g of calcium carbonate concentration of the solution is :

degree of dissociation of Ca(NO)3 in dilute aqueous solution containing 7g of solute per 100g of water at 100degree celsius is 70%. if the vapour pressure of water at 100degree celsius is 760mm of mercury, calculate the vapour pressure of the solution

Which of the following buffer solution turns invalid on addition of 10 ml of 1 M HCL?

(1) 100 ml having 0.15 M NH3 and NH4CL each

(2) 100 ml having 0.2 M NH3 and NH4CL each

(3) 100 ml having 0.2 M NH3 and 0.1 M NH3 and 0.1 M NH4CL each

(4) 100 ml having 0.05 M NH3 and 0.1 M NH4CL each

a sugar syrup of weight 214.2 g contains 34.2 g sugar ( C12 H22 O11 ) . calculate mole fraction of sugar in syrup.

when CuSO4 is added to a solution of ammonia

1) freezing point is lowerd

2) freeing point is raised

3) boiling point is raised

4) both 1 and 3

why ideal solution do not form azeotrope ?

lowering in vapour pressure is the highest for :

(a) 0.2m urea

(b) 0.1m glucose

(c) 0.1m MgSO₄

(d) 0.1m BaCl2

The osmotic of a solution of a synthentic polyisobutylene in benzene was determined at 25^oC . A sample containing 0.20 g of solute/100cm³ of solution developed a rise of 2.4 mm at osmotic equilibrium . The density of the solution was 0.88 g/cm³ . What is the molecular waight of the polyisobutylene.

A 5% solution (wt./mol) of cane sugar is isotonic with 0.877% (wt./vol) of urea solution . Find mol. wt. of urea if the mol. wt. of sugar is 342.

A sample of ferrous sulfate and ferrous oxalate was dissolved in dil H2SO4. The complete oxidation of reaction mixture required 40 ml of N/15 KMnO4. after oxidation the reaction mixture was reduced by Ninc and Sulfuric acid. On again Oxidation by same KMnO4 25 ml were required. The mole ratio of

FeSO4 : FeC2O4 in sample is ??

when a non volatile solute is added to a solvent the vapour pressure of the liquid decrease because the number of solvent molecules on the surface decrease and as a result number of solvent molecules escaping from the surface decrease what does it mean

what do you expect to happen when RBC placed in

1. 1%NaCl solution

2 0.9%NaCl solution

3 0.5%NaCl solution

EXPLAIN IN DETAIL.

if any solute A dimerises in water at 1atm pressure and the boiling point of this solution is 100.52 degree C. if 2moles of A is added to 1kg of water and K_b for water is 0.52 degreeC/ molal, calculate the percentage association of A

1) 50%

2) 30%

3) 25%

4) 100%

which of the followingequimolar solution have highest vapour pressure

Q13)

Differentiate between molality and molarity of a solution. What is the effect of change in temperature of a solution on its molality and molarity?

Molarity of a solution is defined as the number of gram moles of solute present in l L of solution, while molality of a solution is defined as the number of gram moles of solute present in 1 kg of solvent.

Molality of a solution decreases with increase in temperature, while molality of a solution is not affected by temperature.

your answer for above question is not crrect kindly rectify.

commercial sample of cyclohexane freezes at 6 degrees celcius.if freezing point of pure cyclohexane is 6.5 degree celcius and its constant is 20 deg per molal then calculate purity of sample

two liquids having vapour pressure P1 and P2 in pure state in the ratio of 2:1 are mixed in the molar ratio of 1:2 . the ratio of their moles in vapour state would be

1) 1 :1

2) 1 :2

3) 2:1

4) 3:2

the osmotic pressure of 0.01 molar solution of an electrolyte is found to be 0.65 atm at 300k . calculate the vant hoff factor? what conclusion can you draw about the molecular state of the solute in the solution

the osmotic pressure of decimolar solution of urea at 27degree C

1) 2.49 bar

2) 5bar

3) 3.4 bar

4) 1.25 bar

Which of the following solutions is hypotonic with fluids in RBC (Assume that isotonic solid substance completley dissociattes in the solution?

-0.2 M NaCl

-0.1 M NaCL

-0.18M NaCL

-GIVEN ALL

And HOW?

what weight of non volatile solute urea ,needs to be dissolved in 100gms of water in order to decrease the vapour pressure of water by 25% ?

calculat the weight of glucose wihc when dissloved in 100g of water produces the same lowering of vapour pressure as 10 g of fructose dissloved in 50 grm of water . name the law in deducng the answer

normality of 2M sulphuric acid is....... explain

a) 2N

b) 4N

c) N/2

d) N/4

1)0 1M NaCl 2) 0 1 M glucose 3) 0 1 M BaCl₂

how is the vapour pressure of a solvent affected when a non volatile solute is dissolved in it ?

1.6 gm of metal were disolved in HNO3 to prepare its nitrate. The nitrate on strong heating gives 2 gm oxide . The eq. Wt of metal is ??

The ratio of the value of any colligative property for KCl solution to that for sugar is nearly ........... times.

1. 1
2. 0.5
3. 2
4. 2.5

the molar volume of liquid benzene (0.877 gm/ml) increases by a factor of 2750 as its vapourises at 293k and that of liquid toluene ( 0.867gm/lt) increases by a factor of 7720 at the same temp

a solution of benzene and toulene at 293k has a vapour pressure of 46 torr . calculate the mole fraction of benzene in the vapour above the solution?/

A) 37 B) 74 C)111 D)148

which aqueous solution has minimum freezing point ?

(a)0.01M NaCl

(b) 0.005M C₂H₅OH

(c) 0.005M MgI₂

(d) 0.005M MgSO₄

name the solute and solvent in the following solutions:

a)syrup

b)haze9dust in air)

c)butter(water in fat)

what role does the molecular interaction play in deciding the vapour pressure of solution:

1) alcohol and acetone

2) chlorophom and acetone

1. 1.01
2. 1.001
3. 1.1
4. 1.04