Calculate the vapour- pressure lowering of water when5.67g of glucose, C₆H₁₂O₆ is dissolved in 25.2 g water at 25⁰C. The vapour pressure of water at 25⁰C is 23.8 mmHg. What is the vapour pressure of the solution?

Solution

W_B=5.67g

W_A=25.2g

M_B=180g/mol

M_A=18g/mol

N_B=5.67/180 =0.0315 mol glucose

N_A=25.2/18 =1.40 mol water

$mole fraction of glucose, x_{B} = \frac{0.0315}{1.40 + 0.0315} = 0.022 we know that lowering of V . P = \frac{p^{0} - p}{p^{0}} x_{B} = 23.8 x 0.022 = 0524 mmHg \frac{p^{0} - p}{p^{0}} = x_{B} p = p_{A}^{0} - (p^{0} - p) = 23.8 - 0.524 = 23.3 mm Hg$

Some More Questions From Solutions Chapter

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL at 37⁰C.

Suppose a solid solution is formed between two substances, one whose particles are very large and the other whose particles are very small. What kind of solid solution is this likely to be?

Amongst the following compunds identify which are insoluble, partially soluble and highly soluble in water?
(i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform, (vi) pentanol.

For Daily Free Study Material Join wiredfaculty

Solutions

Calculate the vapour- pressure lowering of water when5.67g of glucose, C₆H₁₂O₆ is dissolved in 25.2 g water at 25⁰C. The vapour pressure of water at 25⁰C is 23.8 mmHg. What is the vapour pressure of the solution?

Some More Questions From Solutions Chapter

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL at 37⁰C.

Suppose a solid solution is formed between two substances, one whose particles are very large and the other whose particles are very small. What kind of solid solution is this likely to be?

Amongst the following compunds identify which are insoluble, partially soluble and highly soluble in water?
(i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform, (vi) pentanol.

Two liquids A and B boils at 145⁰C and 190⁰C respectively. Which of them has a higher vapour pressure at 80⁰C ?

State the formula relating pressure of a gas with its mole fraction in a liquid solution in contact with it.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Loaction

For Daily Free Study Material Join wiredfaculty

Solutions

Calculate the vapour- pressure lowering of water when5.67g of glucose, C6H12O6 is dissolved in 25.2 g water at 250C. The vapour pressure of water at 250C is 23.8 mmHg. What is the vapour pressure of the solution?

Some More Questions From Solutions Chapter

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL at 370C.

Suppose a solid solution is formed between two substances, one whose particles are very large and the other whose particles are very small. What kind of solid solution is this likely to be?

Amongst the following compunds identify which are insoluble, partially soluble and highly soluble in water?(i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform, (vi) pentanol.

Two liquids A and B boils at 1450C and 1900C respectively. Which of them has a higher vapour pressure at 800C ?

State the formula relating pressure of a gas with its mole fraction in a liquid solution in contact with it.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Calculate the vapour- pressure lowering of water when5.67g of glucose, C₆H₁₂O₆ is dissolved in 25.2 g water at 25⁰C. The vapour pressure of water at 25⁰C is 23.8 mmHg. What is the vapour pressure of the solution?

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL at 37⁰C.

Amongst the following compunds identify which are insoluble, partially soluble and highly soluble in water?
(i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform, (vi) pentanol.

Two liquids A and B boils at 145⁰C and 190⁰C respectively. Which of them has a higher vapour pressure at 80⁰C ?