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i) Molal elevation constant.
ii) Molal Depression constant.
what happens when RBC is kept in 0.91% solution of NaCl?
what are the applications of Henry's law?
In 10 L water 1 mole of Ca(OH)2 is added with 1 mole of H2SO4.Determine van't hoff factor of final solution?
which is more concentrated 1 molar or 1 molal?
What is a decimolar solution?
A decimolar solution of potassium ferricyanide (K4[Fe(CN)6]) is 50% dissociated at 300k. calculate the osmotic pressure of solution.
Resistance of a conductivity cell filled with 0.1 M is 100 ohm. If the resistance of the same cell when filled with 0.02 M KCl solution is 520 ohms, calculate the conductivity and molar conductivity of the 0.02 M KCl solution. Conductivity of 0.1 M KCl solution is 1.29*10-2 S cm-1.
Q.1 What happens if a patient is given hypertonic solution of glucose? (1 mark)
Q.4 Why the boiling point of a liquid get raised on dissolution of non volatile solute in it ? (1 mark)
Q.6 What will happen to the boiling point of the solution on mixing two miscible liquids showing negative deviation from Raoult 's law? (1 mark)
what are the differences btw ideal and non ideal solns?
the concentration of NO3 ions when equal volumes of 0.1 M AgNO3 and 0.1 M Nacl are mixed together is ?
what is the mole fraction of the solute in 2.5 m aqueous solution ??
find boiling point of solution containing 0.52g of glucose dissolved in 80.2 g of water. kb=0.52 Kkg/m.is the answer=373.132???
vapour pressure of chloroform and dichloromethane at 298 k are 200mm of hg and 415mm of hg respectively.
1)calculate the vapour pressure of solution prepared by mixing 25.5 g of chloroform and 40g of dichloromethane at 298K.
2)mole fraction of each component in vapour phase.
why aquatic species are more comfortable in cold water than warm water?
x g of urea y g of glucose r dissolved in 1000g of water. in a second experiment y g of urea x g of glucose are dissolved in 1000 g of water.the depression of freezing point in the first case is twice the depression in the second case.calculate the ratio x:y.
If N2 gas is bubbled through water at 293 K, how many millimoles of N2 gas would dissolve in 1 litre of water. Assume that N2 exerts a partial pressure of 0.987 bar. Given that Henrys law constant for N2 at 293 K is 76.48 kbar.
1. NaCl or CaCl2 is used to clear snow from roads. why
2. what is an antifreeze?
3. what is de icing agent?
4. what is vant hoff factor for a factor which undergoes tetramerisation in an organic compound.
what is the n-factor for phosphoric acid?
Q- What is meant by semimolar and decimolar solutions?
100 gm of aques solution contains 10 gm of glucose. Then what are the solute and solvent?
What is the significance of Henry's Law constant KH?
solution of glucose in water is labelled as 10% w/w, what would be
the molality and mole fraction of each component in the solution? If
the density of solution is 1.2 g mL−1,
then what shall be the molarity of the solution?
why a person suffering from high blood pressure is advised to take minimum quantity of common salt?
What are the limitations of Henry's law?
What is the Van't Hoff Factor in K4[Fe(CN)6] and BaCl2 ? AND How it is calculated here ?
equivalent mass of H3PO4 for the given reaction
H3PO4 +Ca(OH)2 --> CaHPO4 + 2H2O
Calculate the osmotic pressure of a solution obtained by mixing 100cm3 of 1.5% solution of urea (molar mass =60) and 100cm3 of 3.42 % solution of cane sugar (molar mass=342) at 20oC (R=0.082litre atm/degree/mol).
FeCl3 on reaction with potassium ferrocyanide in aqueous solution gives blue colour.When 0.01M of FeCl3 and 0.1M potassium ferrocyanide are placed in a beaker and seperated by a semi permeable membrane, identify whether there will be an appearance of blue colour on potassium ferrocyanide side due to osmosis.E xplain your answer.
the density of a solution prepared by dissolving 120g of urea in 1000g of water is 1.15g/ml .The molarity of soltuion is:
what is expected value of van,t Hoff factor for K3 [Fe(CN)6] in dilute solutions?
what are the values of delta V mix for solutions showing positive and negative deviations from raoult's law?
calculate the amount of KCL which must be added to 1Kg of water so that the freezing point is depressed by 2K.(Kf for water =1.86 K Kg/mol)?
Two liquids A and B boil at 145 C and 190 C respectively.Which of them has higher vapour pressure at 80 C.Give reason..-
Pre board question
Plz help.What will be the answer
The vapour pressure of pure benzene at a certain temperature is 0.850 bar. A non-volatile, non-electrolyte solid weighing 0.5 g when added to 39.0 g of benzene (molar mass 78 g mol -1). Vapour pressure of the solution, then, is 0.845 bar. What is the molar mass of the solid substance?
. What type of interactions exists between Cl2 and CCl4
a 2g of benzoic acid dissolve in 25g of benzene shows a depression in freezing point of 1.62 k.
molal depression constant for benzene is 4.9 KKg/mol. what is the % of association of acid.
if it forms a dimer in soln .
Henry Law Constant For CO2 In Water Is 1.67x108 Pa At 298 K.Calculate The Quantity Of CO2 In 500 ml Of Soda Water When Packed Under 2.5 atm CO2 Pressure At 298 K ?
what is Formality and normality??
Calculate the molality of 1M solution of sodium nitrate. The Density of the solution is 1.25g/ml.
WHAT IS THE MOLARITY OF A SOLUTION WHICH FREEZES AT -0.192DEGREE CELSIUS ASSUMING NO CHANGE IN THE SOLUTE BY RAISING THE TEMPERATURE,AT WHAT TEMPERATURE WILL THE SAME SOLUTION BOIL?(Kf for water=1.86 degree celsius kg per mole and Kb for water is 0.515 degree clsius kg per mole)
the mole fraction of water in a sulphuric acid solution is 085.calculate the molality of the solution
if 0.5 mol of BaCl2 is mixed with 0.2 mol of Na3PO4.How many maximum moles of Ba3(PO4)2 can be formed?
The partial pressure of ethane over a solution containing 6.56 × 10−3 g of ethane is 1 bar. If the solution contains 5.00 × 10−2 g of ethane, then what shall be the partial pressure of the gas?
Two liquids A and B on mixing produce a warm solution. Which type of deviation from Raoult's law does it show?
For determining the molecular mass of polymers, osmotic pressure is preferred to other Colligative properties. Why????????
Q.1 The values of Henry's law constant (KH) of N2 at temperatures 293 K , 298 K and 303 K are 74.48 kbar, 86.78 kbar and 88.84 kbar respectively.What inference can you draw from these information? (1 mark)
0.7g of a sample of Na2CO3.xH2O were dissoled in water and the volume made up to 100ml . 20ml of this solution
required 19.8ml of 0.1 N HCl for complete neutralization . Find the value of x .
ans = ~2
why is freezing point depression of 0.1 M NaCl solution nearly twice that of 0.1 M glucose solution?
How to calculate equivalent weight?
(iv) 1.0 M KNO3
m= w2/m2 // w1/1000
how did it come?
What is the molecular mass of cane sugar?
sodium chloride solution freezes at lower temperature than water but boils at higher temperature than water , explain.
What is the van't Hoff factor for a compound which undergoes tetramerization in an organic solvent ?
An x molal solution of a compound in benzene has a molefraction =0.2.what is the value of x?
Why is vapour pressure of solution of glucose in water lower than water?
A solution containing 30g of non-volatile solute exactly in 90g of water has a vapour pressure of 2.8 kpa at 298 k. further, 18g of water is then added to the solution & the new vapour pressure becomes 2.9 kpa at 298 k. Calculate.a. Molar mass of the solute b. Vapour pressure of water at 298k
A solution containing 30g of non-volatile solute exactly in 90g of water has a vapour pressure of 2.8 kpa at 298 k. further, 18g of water is then added to the solution & the new vapour pressure becomes 2.9 kpa at 298 k. Calculate.
a. Molar mass of the solute b. Vapour pressure of water at 298k
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